1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2018 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 27.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 # We downcase the drive letter to avoid warnings when
172 # generating autoloads.
173 eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
179 configuration=${host_alias-${build_alias-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdir='${datadir}/emacs/${version}/lisp'
191 standardlisppath='${lispdir}'
192 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
193 '${datadir}/emacs/site-lisp'
194 lisppath='${locallisppath}:${standardlisppath}'
195 etcdir='${datadir}/emacs/${version}/etc'
196 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
197 etcdocdir='${datadir}/emacs/${version}/etc'
198 gamedir='${localstatedir}/games/emacs'
200 dnl Special option to disable the most of other options.
202 [AS_HELP_STRING([--without-all],
203 [omit almost all features and build
204 small executable with minimal dependencies])],
205 [with_features=$withval],
208 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
209 dnl Create a new --with option that defaults to being disabled.
210 dnl NAME is the base name of the option. The shell variable with_NAME
211 dnl will be set to either the user's value (if the option is
212 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
213 dnl option is not specified). Note that the shell variable name is
214 dnl constructed as autoconf does, by replacing non-alphanumeric
215 dnl characters with "_".
216 dnl HELP-STRING is the help text for the option.
217 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
218 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
219 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
222 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
223 dnl Create a new --with option that defaults to $with_features.
224 dnl NAME is the base name of the option. The shell variable with_NAME
225 dnl will be set either to 'no' (for a plain --without-NAME) or to
226 dnl 'yes' (if the option is not specified). Note that the shell
227 dnl variable name is constructed as autoconf does, by replacing
228 dnl non-alphanumeric characters with "_".
229 dnl HELP-STRING is the help text for the option.
230 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
231 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
232 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
235 # For retrieving mail, unencrypted network connections are the default
236 # only on native MS-Windows platforms. (FIXME: These platforms should
237 # also be secure by default.)
239 AC_ARG_WITH([mailutils],
240 [AS_HELP_STRING([--with-mailutils],
241 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
242 options are irrelevant; this is the default if GNU Mailutils is
245 [with_mailutils=$with_features
246 if test "$with_mailutils" = yes; then
247 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
249 if test "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
255 [AS_HELP_STRING([--with-pop],
256 [Support POP mail retrieval if Emacs movemail is used (not recommended,
257 as Emacs movemail POP is insecure). This is the default only on
258 native MS-Windows.])],
261 *-mingw*) with_pop=yes;;
262 *) with_pop=no-by-default;;
264 if test "$with_pop" = yes; then
265 AC_DEFINE(MAIL_USE_POP)
267 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
270 if test "$with_kerberos" != no; then
273 AH_TEMPLATE(KERBEROS,
274 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
276 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
277 if test "${with_kerberos5}" != no; then
278 if test "${with_kerberos}" = no; then
282 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
285 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
286 dnl FIXME hesiod support may not be present, so it seems like an error
287 dnl to define, or at least use, this unconditionally.
288 if test "$with_hesiod" != no; then
289 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
292 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
293 if test "$with_mail_unlink" != no; then
294 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
297 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
298 [string giving default POP mail host])],
299 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
301 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
302 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
303 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
304 [ case "${withval}" in
305 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
306 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
307 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
312 [with_sound=$with_features])
314 dnl FIXME currently it is not the last.
315 dnl This should be the last --with option, because --with-x is
316 dnl added later on when we find the file name of X, and it's best to
317 dnl keep them together visually.
318 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
319 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
320 [ case "${withval}" in
321 y | ye | yes ) val=gtk ;;
323 l | lu | luc | luci | lucid ) val=lucid ;;
324 a | at | ath | athe | athen | athena ) val=athena ;;
325 m | mo | mot | moti | motif ) val=motif ;;
326 g | gt | gtk ) val=gtk ;;
330 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
331 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
332 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
333 'athena' and 'lucid' are synonyms.])
339 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
340 if test "$with_wide_int" = yes; then
341 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
344 dnl _ON results in a '--without' option in the --help output, so
345 dnl the help text should refer to "don't compile", etc.
346 with_xpm_set=${with_xpm+set}
347 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
348 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
349 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
350 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
351 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
352 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
353 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
354 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
355 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
356 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
357 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
358 OPTION_DEFAULT_ON([json], [don't compile with native JSON support])
360 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
361 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
362 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
364 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
365 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
366 OPTION_DEFAULT_ON([xim],[at runtime, default X11 XIM to off])
367 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
368 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
369 On by default on macOS.])],[],[with_ns=maybe])
370 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
372 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
373 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
374 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
375 [compile with Gconf support (Gsettings replaces this)])],[],
376 [if test $with_features = yes; then
381 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
382 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
383 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
384 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
385 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
386 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
388 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
389 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
390 [ case "${withval}" in
391 y | ye | yes ) val=yes ;;
393 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
394 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
395 g | gf | gfi | gfil | gfile ) val=gfile ;;
396 w | w3 | w32 ) val=w32 ;;
397 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
398 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
399 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
400 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
403 with_file_notification=$val
405 [with_file_notification=$with_features])
407 OPTION_DEFAULT_OFF([xwidgets],
408 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
410 ## For the times when you want to build Emacs but don't have
411 ## a suitable makeinfo, and can live without the manuals.
412 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
413 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
415 ## Makefile.in needs the cache file name.
418 ## This is an option because I do not know if all info/man support
419 ## compressed files, nor how to test if they do so.
420 OPTION_DEFAULT_ON([compress-install],
421 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
422 make GZIP_PROG= install])
424 AC_ARG_WITH(gameuser,dnl
425 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
426 [user for shared game score files.
427 An argument prefixed by ':' specifies a group instead.])])
430 case ${with_gameuser} in
432 yes) gamegroup=games ;;
433 :*) gamegroup=${with_gameuser#:} ;;
434 *) gameuser=${with_gameuser} ;;
437 AC_ARG_WITH([gnustep-conf],dnl
438 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
439 [name of GNUstep configuration file to use on systems where the command
440 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
441 /etc/GNUstep/GNUstep.conf])])
442 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
443 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
444 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
445 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
447 AC_ARG_ENABLE(ns-self-contained,
448 [AS_HELP_STRING([--disable-ns-self-contained],
449 [disable self contained build under NeXTstep])],
450 EN_NS_SELF_CONTAINED=$enableval,
451 EN_NS_SELF_CONTAINED=yes)
454 AC_ARG_ENABLE(locallisppath,
455 [AS_HELP_STRING([--enable-locallisppath=PATH],
456 [directories Emacs should search for lisp files specific
458 if test "${enableval}" = "no"; then
460 elif test "${enableval}" != "yes"; then
461 locallisppath=${enableval} locallisppathset=yes
464 AC_ARG_ENABLE(checking,
465 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
466 [enable expensive run-time checks. With LIST,
467 enable only specific categories of checks.
468 Categories are: all,yes,no.
469 Flags are: stringbytes, stringoverrun, stringfreelist,
470 xmallocoverrun, conslist, glyphs])],
471 [ac_checking_flags="${enableval}"],[])
472 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
473 for check in $ac_checking_flags
476 # these set all the flags to specific states
477 yes) ac_enable_checking=1 ;;
478 no) ac_enable_checking= ;
479 ac_gc_check_stringbytes= ;
480 ac_gc_check_string_overrun= ;
481 ac_gc_check_string_free_list= ;
482 ac_xmalloc_overrun= ;
483 ac_gc_check_cons_list= ;
485 all) ac_enable_checking=1 ;
486 ac_gc_check_stringbytes=1 ;
487 ac_gc_check_string_overrun=1 ;
488 ac_gc_check_string_free_list=1 ;
489 ac_xmalloc_overrun=1 ;
490 ac_gc_check_cons_list=1 ;
492 # these enable particular checks
493 stringbytes) ac_gc_check_stringbytes=1 ;;
494 stringoverrun) ac_gc_check_string_overrun=1 ;;
495 stringfreelist) ac_gc_check_string_free_list=1 ;;
496 xmallocoverrun) ac_xmalloc_overrun=1 ;;
497 conslist) ac_gc_check_cons_list=1 ;;
498 glyphs) ac_glyphs_debug=1 ;;
499 *) AC_MSG_ERROR(unknown check category $check) ;;
504 if test x$ac_enable_checking != x ; then
505 AC_DEFINE(ENABLE_CHECKING, 1,
506 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
508 if test x$ac_gc_check_stringbytes != x ; then
509 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
510 [Define this temporarily to hunt a bug. If defined, the size of
511 strings is redundantly recorded in sdata structures so that it can
512 be compared to the sizes recorded in Lisp strings.])
514 if test x$ac_gc_check_string_overrun != x ; then
515 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
516 [Define this to check for short string overrun.])
518 if test x$ac_gc_check_string_free_list != x ; then
519 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
520 [Define this to check the string free list.])
522 if test x$ac_xmalloc_overrun != x ; then
523 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
524 [Define this to check for malloc buffer overrun.])
526 if test x$ac_gc_check_cons_list != x ; then
527 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
528 [Define this to check for errors in cons list.])
530 if test x$ac_glyphs_debug != x ; then
531 AC_DEFINE(GLYPH_DEBUG, 1,
532 [Define this to enable glyphs debugging code.])
535 dnl The name of this option is unfortunate. It predates, and has no
536 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
537 dnl Actually, it stops it working.
538 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
539 AC_ARG_ENABLE(profiling,
540 [AS_HELP_STRING([--enable-profiling],
541 [build emacs with low-level, gprof profiling support.
542 Mainly useful for debugging Emacs itself. May not work on
543 all platforms. Stops profiler.el working.])],
544 [ac_enable_profiling="${enableval}"],[])
545 if test x$ac_enable_profiling != x ; then
546 PROFILING_CFLAGS="-DPROFILING=1 -pg"
550 AC_SUBST(PROFILING_CFLAGS)
552 AC_ARG_ENABLE(autodepend,
553 [AS_HELP_STRING([--enable-autodepend],
554 [automatically generate dependencies to .h-files.
555 Requires gcc, enabled if found.])],
556 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
558 AC_ARG_ENABLE(gtk-deprecation-warnings,
559 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
560 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
561 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
564 AC_ARG_ENABLE([build-details],
565 [AS_HELP_STRING([--disable-build-details],
566 [Make the build more deterministic by omitting host
567 names, time stamps, etc. from the output.])],
568 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
569 AC_SUBST([BUILD_DETAILS])
571 dnl This used to use changequote, but, apart from 'changequote is evil'
572 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
573 dnl the great gob of text. Thus it's not processed for possible expansion.
574 dnl Just make sure the brackets remain balanced.
576 dnl Since Emacs can't find matching pairs of quotes, boundaries are
577 dnl indicated by comments.
581 ### If you add support for a new configuration, add code to this
582 ### switch statement to recognize your configuration name and select
583 ### the appropriate opsys.
585 ### As far as handling version numbers on operating systems is
586 ### concerned, make sure things will fail in a fixable way. If
587 ### /etc/MACHINES doesn't say anything about version numbers, be
588 ### prepared to handle anything reasonably. If version numbers
589 ### matter, be sure /etc/MACHINES says something about it.
592 case "${canonical}" in
594 ## GNU/Linux and similar ports
609 ## FreeBSD kernel + glibc based userland
620 *-*-openbsd* | *-*-mirbsd* )
624 ## Apple Darwin / macOS
626 case "${canonical}" in
627 *-apple-darwin[0-9].*) unported=yes ;;
628 i[3456]86-* | x86_64-* ) ;;
632 ## FIXME: Find a way to use Fink if available (Bug#11507).
635 ## Chromium Native Client
645 ## HP 9000 series 700 and 800, running HP/UX
649 hppa*-hp-hpux1[1-9]* )
651 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
655 rs6000-ibm-aix4.[23]* )
658 powerpc-ibm-aix4.[23]* )
661 rs6000-ibm-aix[56]* )
664 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
670 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
671 | x86_64-*-solaris2* | x86_64-*-sunos5*)
672 case "${canonical}" in
674 amd64-*-*|x86_64-*-*) ;;
678 case "${canonical}" in
679 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
681 emacs_check_sunpro_c=yes
683 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
684 ## Note that Emacs 23.1's NEWS said the following would be dropped.
685 *-sunos5.6* | *-solaris2.6* )
689 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
690 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
692 emacs_check_sunpro_c=yes
695 ## Watch out for a compiler that we know will not work.
696 case "${canonical}" in
697 *-solaris* | *-sunos5* )
698 if [ "x$CC" = x/usr/ucb/cc ]; then
699 ## /usr/ucb/cc doesn't work;
700 ## we should find some other compiler that does work.
711 test -z "$CC" && CC=qcc
712 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
713 LDFLAGS="-N2MB $LDFLAGS"
716 ## Intel 386 machines where we don't care about the manufacturer.
718 case "${canonical}" in
719 *-darwin* ) opsys=darwin ;;
722 # MinGW overrides and adds some system headers in nt/inc.
723 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
725 *-sysv4.2uw* ) opsys=unixware ;;
726 *-sysv5uw* ) opsys=unixware ;;
727 *-sysv5OpenUNIX* ) opsys=unixware ;;
728 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
734 case "${canonical}" in
737 # MinGW overrides and adds some system headers in nt/inc.
738 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
740 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
749 ### If the code above didn't choose an operating system, just choose
750 ### an operating system based on the configuration name. You really
751 ### only want to use this when you have no idea what the right
752 ### operating system is; if you know what operating systems a machine
753 ### runs, it's cleaner to make it explicit in the case statement
755 if test x"${opsys}" = x; then
756 case "${canonical}" in
757 *-gnu* ) opsys=gnu ;;
767 if test $unported = yes; then
768 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
769 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
770 Check 'etc/MACHINES' for recognized configuration names.])
773 #### Choose a compiler.
775 dnl Don't bother to test for C89.
776 AC_DEFUN([_AC_PROG_CC_C89], [$2])
778 dnl Sets GCC=yes if using gcc.
779 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
780 if test -n "$XCRUN"; then
781 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
782 test -n "$AR" && export AR
785 dnl Emacs needs C99 or later.
790 if test x$GCC = xyes; then
791 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
794 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
795 AC_DEFUN([gl_CRYPTO_CHECK])
796 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
797 # as we don't use them.
798 AC_DEFUN([gl_FCNTL_O_FLAGS])
799 # Avoid gnulib's test for pthread_sigmask.
801 for func in $ac_func_list; do
802 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
805 # Use the system putenv even if it lacks GNU features, as we don't need them,
806 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
807 AC_CHECK_FUNCS_ONCE([putenv])
808 AC_DEFUN([gl_FUNC_PUTENV],
809 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
810 # Emacs does not use the wchar or wctype-h modules.
811 AC_DEFUN([gt_TYPE_WINT_T],
812 [GNULIB_OVERRIDES_WINT_T=0
813 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
815 # Initialize gnulib right after choosing the compiler.
816 dnl Amongst other things, this sets AR and ARFLAGS.
819 if test "$ac_test_CFLAGS" != set; then
820 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
821 # if -g3 works and the user does not specify CFLAGS.
822 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
825 emacs_g3_CFLAGS='-g3';;
827 emacs_g3_CFLAGS='-g3 -O2';;
831 if test -n "$emacs_g3_CFLAGS"; then
832 emacs_save_CFLAGS=$CFLAGS
833 CFLAGS=$emacs_g3_CFLAGS
834 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
835 [emacs_cv_prog_cc_g3],
836 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
837 [emacs_cv_prog_cc_g3=yes],
838 [emacs_cv_prog_cc_g3=no])])
839 if test $emacs_cv_prog_cc_g3 != yes; then
840 CFLAGS=$emacs_save_CFLAGS
842 if test $opsys = mingw32; then
843 CFLAGS="$CFLAGS -gdwarf-2"
850 # No optimization flag was inferred for this non-GCC compiler.
851 # Try -O. This is needed for xlc on AIX; see Bug#14258.
852 emacs_save_CFLAGS=$CFLAGS
853 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
855 AC_CACHE_CHECK([whether $CC accepts -O],
856 [emacs_cv_prog_cc_o],
857 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
858 [emacs_cv_prog_cc_o=yes],
859 [emacs_cv_prog_cc_o=no])])
860 if test $emacs_cv_prog_cc_o != yes; then
861 CFLAGS=$emacs_save_CFLAGS
866 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
867 # ---------------------------------------------------------------------------
868 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
869 # Otherwise, run RUN-IF-NOT-FOUND.
870 AC_DEFUN([gl_GCC_VERSION_IFELSE],
874 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
877 # error "your version of gcc is older than $1.$2"
884 AC_ARG_ENABLE([gcc-warnings],
885 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
886 [control generation of GCC warnings. The TYPE 'yes'
887 means to fail if any warnings are issued; 'warn-only'
888 means issue warnings without failing (default for
889 developer builds); 'no' means disable warnings
890 (default for non-developer builds).])],
893 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
895 gl_gcc_warnings=$enableval],
896 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
897 # is a developer as opposed to a builder. This is most likely true
898 # if GCC is recent enough and there is a .git directory or file;
899 # however, if there is also a .tarball-version file it is probably
900 # just a release imported into Git for patch management.
902 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
903 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
906 AC_ARG_ENABLE([check-lisp-object-type],
907 [AS_HELP_STRING([--enable-check-lisp-object-type],
908 [Enable compile time checks for the Lisp_Object data type,
909 which can catch some bugs during development.])])
910 if test "$enable_check_lisp_object_type" = yes; then
911 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
912 [Define to enable compile-time checks for the Lisp_Object data type.])
915 # clang is unduly picky about some things.
916 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
923 [emacs_cv_clang=yes],
924 [emacs_cv_clang=no])])
927 # When compiling with GCC, prefer -isystem to -I when including system
928 # include files, to avoid generating useless diagnostics for the files.
929 AS_IF([test $gl_gcc_warnings = no],
932 AS_IF([test "$emacs_cv_clang" = yes],
934 # Turn off some warnings if supported.
935 gl_WARN_ADD([-Wno-switch])
936 gl_WARN_ADD([-Wno-pointer-sign])
937 gl_WARN_ADD([-Wno-string-plus-int])
938 gl_WARN_ADD([-Wno-unknown-attributes])
943 # This, $nw, is the list of warnings we disable.
946 case $with_x_toolkit in
947 lucid | athena | motif)
948 # Old toolkits mishandle 'const'.
949 nw="$nw -Wwrite-strings"
952 AS_IF([test $gl_gcc_warnings = yes],
953 [WERROR_CFLAGS=-Werror])
955 nw="$nw -Wcast-align -Wcast-align=strict" # Emacs is tricky with pointers.
956 nw="$nw -Wduplicated-branches" # Too many false alarms
957 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
958 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
959 nw="$nw -Woverlength-strings" # Not a problem these days
960 nw="$nw -Wformat-nonliteral" # we do this a lot
961 nw="$nw -Wvla" # Emacs uses <vla.h>.
962 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
963 nw="$nw -Winline" # OK to ignore 'inline'
964 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
965 # signed overflow has undefined behavior
966 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
967 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
968 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
969 nw="$nw -Wabi" # Not useful, perceived as noise
971 # Emacs doesn't care about shadowing; see
972 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
975 # Emacs's use of alloca inhibits protecting the stack.
976 nw="$nw -Wstack-protector"
978 # Emacs's use of partly-const functions such as Fgnutls_available_p
979 # make this option problematic.
980 nw="$nw -Wsuggest-attribute=const"
982 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
983 # option problematic.
984 nw="$nw -Wsuggest-attribute=pure"
986 # This part is merely for shortening the command line,
987 # since -Wall implies -Wswitch.
990 # This part is merely for shortening the command line,
991 # since -Wno-FOO needs to be added below regardless.
992 nw="$nw -Wmissing-field-initializers"
993 nw="$nw -Woverride-init"
994 nw="$nw -Wtype-limits"
995 nw="$nw -Wunused-parameter"
997 if test "$emacs_cv_clang" = yes; then
998 nw="$nw -Wcast-align"
999 nw="$nw -Wdouble-promotion"
1000 nw="$nw -Wmissing-braces"
1003 # These cause too much noise in the MinGW build
1004 if test $opsys = mingw32; then
1005 nw="$nw -Wpointer-sign"
1006 nw="$nw -Wsuggest-attribute=format"
1009 gl_MANYWARN_ALL_GCC([ws])
1010 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1014 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1015 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1016 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1017 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1018 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1019 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1020 gl_WARN_ADD([-Wno-format-nonliteral])
1022 # clang is unduly picky about braces.
1023 if test "$emacs_cv_clang" = yes; then
1024 gl_WARN_ADD([-Wno-missing-braces])
1027 # This causes too much noise in the MinGW build
1028 if test $opsys = mingw32; then
1029 gl_WARN_ADD([-Wno-pointer-sign])
1032 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1033 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1034 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1035 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1036 without upsetting glibc 2.15+. */
1037 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1038 && defined __OPTIMIZE__ && __OPTIMIZE__)
1039 # define _FORTIFY_SOURCE 2
1044 # clang is picky about these regardless of whether
1045 # --enable-gcc-warnings is specified.
1046 if test "$emacs_cv_clang" = yes; then
1047 gl_WARN_ADD([-Wno-initializer-overrides])
1048 gl_WARN_ADD([-Wno-tautological-compare])
1049 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1052 # Use a slightly smaller set of warning options for lib/.
1054 nw="$nw -Wunused-macros"
1055 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1057 AC_SUBST([WERROR_CFLAGS])
1058 AC_SUBST([GNULIB_WARN_CFLAGS])
1067 AC_ARG_ENABLE(link-time-optimization,
1068 [AS_HELP_STRING([--enable-link-time-optimization],
1069 [build with link-time optimization
1070 (experimental; see INSTALL)])],
1071 if test "${enableval}" != "no"; then
1073 if test "$emacs_cv_clang" = yes; then
1074 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1075 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1076 if test -x "$GOLD_PLUGIN"; then
1079 elif test x$GCC = xyes; then
1080 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1081 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1082 if test x$CPUS != x; then
1088 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1090 if test -z "$LTO"; then
1094 CFLAGS="$CFLAGS $LTO"
1095 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1096 [ac_lto_supported=yes], [ac_lto_supported=no])
1097 CFLAGS="$old_CFLAGS"
1099 AC_MSG_RESULT([$ac_lto_supported])
1100 if test "$ac_lto_supported" = "yes"; then
1101 CFLAGS="$CFLAGS $LTO"
1102 if test "$emacs_cv_clang" = yes; then
1103 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1104 # WARNING: 'ar --plugin ...' doesn't work without
1105 # command, so plugin name is appended to ARFLAGS.
1106 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1107 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1109 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1110 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1111 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1112 dnl dump core on Fedora 20, so play it safe for now.
1113 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1114 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1120 dnl Automake replacements.
1121 AC_DEFUN([AM_CONDITIONAL],
1125 dnl Prefer silent make output. For verbose output, use
1126 dnl 'configure --disable-silent-rules' or 'make V=1' .
1127 dnl This code is adapted from Automake.
1128 dnl Although it can be simplified now that GNU Make is assumed,
1129 dnl the simplification hasn't been done yet.
1130 AC_ARG_ENABLE([silent-rules],
1132 [--disable-silent-rules],
1133 [verbose build output (undo: "make V=0")])])
1134 if test "$enable_silent_rules" = no; then
1135 AM_DEFAULT_VERBOSITY=1
1137 AM_DEFAULT_VERBOSITY=0
1140 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1142 AC_SUBST([AM_DEFAULT_V])
1143 AC_SUBST([AM_DEFAULT_VERBOSITY])
1145 dnl Some other nice autoconf tests.
1147 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1149 dnl if test "x$RANLIB" = x; then
1154 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1155 dnl can be made to directories. This is not relevant for our usage, and
1156 dnl excludes some cases that work fine for us. Eg MS Windows or files
1157 dnl hosted on AFS, both examples where simple links work, but links to
1158 dnl directories fail. We use a cut-down version instead.
1161 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1162 [rm -f conf$$ conf$$.file
1164 emacs_cv_ln_s_fileonly='cp -p'
1166 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1167 dnl random program in the current directory.
1168 if (echo >conf$$.file) 2>/dev/null; then
1169 if ln -s conf$$.file conf$$ 2>/dev/null; then
1170 if test "$opsys" = "mingw32"; then
1171 emacs_cv_ln_s_fileonly='/bin/ln -s'
1173 emacs_cv_ln_s_fileonly='ln -s'
1175 elif ln conf$$.file conf$$ 2>/dev/null; then
1176 if test "$opsys" = "mingw32"; then
1177 emacs_cv_ln_s_fileonly=/bin/ln
1179 emacs_cv_ln_s_fileonly=ln
1184 rm -f conf$$ conf$$.file])
1185 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1187 AC_SUBST(LN_S_FILEONLY)
1190 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1191 dnl doesn't support links to directories, as in "ln file dir". But that
1192 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1193 dnl executables at "make install" time.
1194 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1195 dnl for more details.
1196 if test "$opsys" = "mingw32"; then
1200 dnl On some Debian versions, "install-info" prints irritating messages
1201 dnl "This is not dpkg install-info anymore, but GNU install-info"
1202 dnl if called via an absolute file name.
1203 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1204 dnl Sadly some people may have an old ginstall-info installed on
1205 dnl non-Debian systems, so we can't use this.
1206 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1207 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1209 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1210 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1211 dnl Don't use GZIP, which is used by gzip for additional parameters.
1212 AC_PATH_PROG(GZIP_PROG, gzip)
1214 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1215 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1217 AC_CACHE_CHECK([for 'find' args to delete a file],
1218 [emacs_cv_find_delete],
1219 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1220 test ! -f conftest.tmp
1221 then emacs_cv_find_delete="-delete"
1222 else emacs_cv_find_delete="-exec rm -f {} ';'"
1224 FIND_DELETE=$emacs_cv_find_delete
1225 AC_SUBST([FIND_DELETE])
1229 if test "$CANNOT_DUMP" != yes; then
1230 if test $opsys = gnu-linux; then
1231 if test "${SETFATTR+set}" != set; then
1232 AC_CACHE_CHECK([for setfattr],
1233 [emacs_cv_prog_setfattr],
1235 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1236 emacs_cv_prog_setfattr=yes
1238 emacs_cv_prog_setfattr=no
1240 if test "$emacs_cv_prog_setfattr" = yes; then
1241 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1247 AC_SUBST([SETFATTR])
1250 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1251 gnu-linux,,* | netbsd,,[0-7].*)
1252 AC_PATH_PROG([PAXCTL], [paxctl], [],
1253 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1254 if test -n "$PAXCTL"; then
1255 if test "$opsys" = netbsd; then
1256 PAXCTL_dumped='$(PAXCTL) +a'
1257 PAXCTL_notdumped=$PAXCTL_dumped
1259 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1260 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1261 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1262 AC_MSG_RESULT([yes])
1267 if test -n "$PAXCTL"; then
1268 PAXCTL_dumped='$(PAXCTL) -zex'
1269 PAXCTL_notdumped='$(PAXCTL) -r'
1275 AC_SUBST([PAXCTL_dumped])
1276 AC_SUBST([PAXCTL_notdumped])
1278 # Makeinfo on macOS is ancient, check whether there is a more recent
1279 # version installed by Homebrew.
1280 AC_CHECK_PROGS(BREW, [brew])
1281 if test -n "$BREW"; then
1282 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1283 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1286 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1287 if test "${MAKEINFO:=makeinfo}" != "no"; then
1288 case `($MAKEINFO --version) 2>/dev/null` in
1289 *' (GNU texinfo) '4.1[[3-9]]* | \
1290 *' (GNU texinfo) '[[5-9]]* | \
1291 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1296 ## Makeinfo is unusual. For a released Emacs, the manuals are
1297 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1298 ## therefore in the category of "special tools" not normally required, which
1299 ## configure does not have to check for (eg autoconf itself).
1300 ## In a repository checkout on the other hand, the manuals are not included.
1301 ## So makeinfo is a requirement to build from the repository, and configure
1302 ## should test for it as it does for any other build requirement.
1303 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1304 ## with pre-built manuals, from a repository checkout.
1307 if test "$MAKEINFO" = "no"; then
1309 if test "x${with_makeinfo}" = "xno"; then
1311 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1312 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1313 source tree does not seem to have pre-built manuals in the 'info' directory.
1314 Either install a suitable version of makeinfo, or re-run configure
1315 with the '--without-makeinfo' option to build without the manuals.] )
1318 AC_SUBST([MAKEINFO])
1319 AC_SUBST(HAVE_MAKEINFO)
1321 if test $opsys = mingw32; then
1322 DOCMISC_W32=efaq-w32
1326 AC_SUBST(DOCMISC_W32)
1328 dnl Add our options to ac_link now, after it is set up.
1330 if test x$GCC = xyes; then
1331 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1332 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1334 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1335 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1338 AC_CACHE_CHECK([whether addresses are sanitized],
1339 [emacs_cv_sanitize_address],
1342 [[#ifndef __has_feature
1343 #define __has_feature(f) 0
1345 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1347 error "Addresses are not sanitized.";
1350 [emacs_cv_sanitize_address=yes],
1351 [emacs_cv_sanitize_address=no])])
1353 dnl The function dump-emacs will not be defined and temacs will do
1354 dnl (load "loadup") automatically unless told otherwise.
1355 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1357 nacl) CANNOT_DUMP=yes ;;
1360 if test "$CANNOT_DUMP" = "yes"; then
1361 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1362 elif test "$emacs_cv_sanitize_address" = yes; then
1363 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1366 AC_SUBST(CANNOT_DUMP)
1369 UNEXEC_OBJ=unexelf.o
1371 # MSDOS uses unexcoff.o
1373 UNEXEC_OBJ=unexaix.o
1379 UNEXEC_OBJ=unexmacosx.o
1382 UNEXEC_OBJ=unexhp9k800.o
1385 UNEXEC_OBJ=unexw32.o
1388 # Use the Solaris dldump() function, called from unexsol.c, to dump
1389 # emacs, instead of the generic ELF dump code found in unexelf.c.
1390 # The resulting binary has a complete symbol table, and is better
1391 # for debugging and other observability tools (debuggers, pstack, etc).
1393 # It is likely that dldump() works with older Solaris too, but this has
1394 # not been tested, so for now this change is for Solaris 10 or newer.
1395 UNEXEC_OBJ=unexsol.o
1398 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1403 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1404 ## The system compiler, GCC, has apparently been modified to not
1405 ## look there, contrary to what a stock GCC would do.
1406 ### It's not our place to do this. See bug#10313#17.
1407 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1412 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1413 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1417 ### It's not our place to do this. See bug#10313#17.
1418 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1423 ## Han Boetes <han@boetes.org> says this is necessary,
1424 ## otherwise Emacs dumps core on elf systems.
1425 LD_SWITCH_SYSTEM="-Z"
1428 AC_SUBST(LD_SWITCH_SYSTEM)
1430 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1432 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1433 ## which has not been defined yet. When this was handled with cpp,
1434 ## it was expanded to null when configure sourced the s/*.h file.
1435 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1436 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1437 ## (or somesuch), but because it is supposed to go at the _front_
1438 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1439 ## Compare with the gnu-linux case below, which added to the end
1440 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1441 ## LD_SWITCH_SYSTEM_TEMACS.
1444 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1451 AC_CHECK_DECL([__ELF__])
1452 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1453 ## With ELF, make sure that all common symbols get allocated to in the
1454 ## data section. Otherwise, the dump of temacs may miss variables in
1455 ## the shared library that have been initialized. For example, with
1456 ## GNU libc, __malloc_initialized would normally be resolved to the
1457 ## shared library's .bss section, which is fatal.
1458 if test "x$GCC" = "xyes"; then
1459 C_SWITCH_MACHINE="-fno-common"
1461 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1464 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1465 dnl albeit under the mistaken assumption that said file
1466 dnl was no longer used.
1467 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1471 AC_SUBST(C_SWITCH_MACHINE)
1473 AC_SUBST(UNEXEC_OBJ)
1476 ## Some programs in src produce warnings saying certain subprograms
1477 ## are too complex and need a MAXMEM value greater than 2000 for
1478 ## additional optimization. --nils@exp-math.uni-essen.de
1479 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1480 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1481 if test "$opsys" = "mingw32"; then
1482 case "$canonical" in
1483 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1484 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1487 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1488 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1489 AC_SUBST(C_SWITCH_SYSTEM)
1494 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1495 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1497 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1499 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1501 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1503 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1505 ## Motif needs -lgen.
1506 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1509 AC_SUBST(LIBS_SYSTEM)
1511 ### Make sure subsequent tests use flags consistent with the build flags.
1513 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1514 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1516 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1519 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1520 AC_DEFUN([AC_TYPE_SIZE_T])
1521 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1522 AC_DEFUN([AC_TYPE_UID_T])
1524 # sqrt and other floating-point functions such as fmod and frexp
1525 # are found in -lm on many systems.
1527 AC_SEARCH_LIBS([sqrt], [m])
1528 if test "X$LIBS" = "X$OLD_LIBS"; then
1531 LIB_MATH=$ac_cv_search_sqrt
1535 dnl Current possibilities handled by sed (aix4-2 -> aix,
1536 dnl gnu-linux -> gnu/linux, etc.):
1537 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1538 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1539 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1546 ## Adding -lm confuses the dynamic linker, so omit it.
1549 freebsd | dragonfly )
1550 SYSTEM_TYPE=berkeley-unix
1552 gnu-linux | gnu-kfreebsd )
1554 hpux10-20 | hpux11 )
1558 SYSTEM_TYPE=windows-nt
1561 SYSTEM_TYPE=berkeley-unix
1565 SYSTEM_TYPE=usg-unix-v
1571 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1572 [The type of system you are compiling for; sets 'system-type'.])
1573 AC_SUBST([SYSTEM_TYPE])
1576 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1577 pre_PKG_CONFIG_LIBS=$LIBS
1579 PKG_PROG_PKG_CONFIG(0.9.0)
1581 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1582 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1583 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1584 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1585 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1586 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1588 AC_DEFUN([EMACS_CHECK_MODULES],
1589 [PKG_CHECK_MODULES([$1], [$2],
1590 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1591 m4_default([$3], [HAVE_$1=yes])],
1592 [m4_default([$4], [HAVE_$1=no])])])
1595 if test "${with_sound}" != "no"; then
1596 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1597 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1598 have_sound_header=yes, [], [
1600 #define WIN32_LEAN_AND_MEAN
1601 #include <windows.h>
1604 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1605 AC_MSG_ERROR([OSS sound support requested but not found.])
1607 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1608 # Emulation library used on NetBSD.
1609 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1610 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1611 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1612 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1613 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1617 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1619 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1620 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1621 if test $HAVE_ALSA = yes; then
1622 SAVE_CFLAGS="$CFLAGS"
1624 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1625 LIBS="$ALSA_LIBS $LIBS"
1626 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1627 emacs_alsa_normal=yes,
1628 emacs_alsa_normal=no)
1629 if test "$emacs_alsa_normal" != yes; then
1630 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1631 [[snd_lib_error_set_handler (0);]])],
1632 emacs_alsa_subdir=yes,
1633 emacs_alsa_subdir=no)
1634 if test "$emacs_alsa_subdir" != yes; then
1635 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1637 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1640 CFLAGS="$SAVE_CFLAGS"
1642 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1643 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1644 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1645 elif test "${with_sound}" = "alsa"; then
1646 AC_MSG_ERROR([ALSA sound support requested but not found.])
1648 fi dnl with_sound = alsa|yes
1650 dnl Define HAVE_SOUND if we have sound support. We know it works and
1651 dnl compiles only on the specified platforms. For others, it
1652 dnl probably doesn't make sense to try.
1653 dnl FIXME So surely we should bypass this whole section if not using
1654 dnl one of these platforms?
1655 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1657 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1658 dnl Adjust the --with-sound help text if you change this.
1659 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1660 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1666 AC_SUBST(CFLAGS_SOUND)
1669 dnl checks for header files
1670 AC_CHECK_HEADERS_ONCE(
1677 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1679 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1680 [emacs_cv_personality_addr_no_randomize],
1682 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1683 [[personality (personality (0xffffffff)
1684 | ADDR_NO_RANDOMIZE)]])],
1685 [emacs_cv_personality_addr_no_randomize=yes],
1686 [emacs_cv_personality_addr_no_randomize=no])])
1687 if test $emacs_cv_personality_addr_no_randomize = yes; then
1688 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1689 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1692 # Note that Solaris has sys/sysinfo.h which defines struct
1693 # sysinfo as well. To make sure that we're using GNU/Linux
1694 # sysinfo, we explicitly set one of its fields.
1695 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1696 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1697 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1698 [[struct sysinfo si;
1701 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1703 if test $emacs_cv_linux_sysinfo = yes; then
1704 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1705 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1706 [[struct sysinfo si; return si.mem_unit]])],
1707 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1708 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1712 dnl On Solaris 8 there's a compilation warning for term.h because
1713 dnl it doesn't define 'bool'.
1714 AC_CHECK_HEADERS(term.h, , , -)
1716 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1718 if test $ac_cv_have_decl_sys_siglist != yes; then
1719 # For Tru64, at least:
1720 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1725 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1726 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1727 #if HAVE_SYS_SOCKET_H
1728 #include <sys/socket.h>
1730 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1731 #if HAVE_SYS_SOCKET_H
1732 #include <sys/socket.h>
1734 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1735 #if HAVE_SYS_SOCKET_H
1736 #include <sys/socket.h>
1739 dnl checks for structure members
1740 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1741 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1742 struct ifreq.ifr_addr,
1743 struct ifreq.ifr_addr.sa_len], , ,
1744 [AC_INCLUDES_DEFAULT
1745 #if HAVE_SYS_SOCKET_H
1746 #include <sys/socket.h>
1752 dnl Check for endianness.
1753 dnl AC_C_BIGENDIAN is done by gnulib.
1755 dnl check for Make feature
1758 AUTODEPEND_PARENTS='lib src'
1759 dnl check if we have GCC and autodepend is on.
1760 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1761 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1762 [SAVE_CFLAGS="$CFLAGS"
1763 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1764 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1765 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1766 CFLAGS="$SAVE_CFLAGS"
1767 test -f deps.d || emacs_cv_autodepend=no
1769 if test $emacs_cv_autodepend = yes; then
1773 AC_SUBST(AUTO_DEPEND)
1775 #### Choose a window system.
1777 ## We leave window_system equal to none if
1778 ## we end up building without one. Any new window system should
1779 ## set window_system to an appropriate value and add objects to
1780 ## window-system-specific substs.
1784 if test "$no_x" != yes; then
1788 LD_SWITCH_X_SITE_RPATH=
1789 if test "${x_libraries}" != NONE; then
1790 if test -n "${x_libraries}"; then
1791 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1792 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1793 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1796 x_default_search_path=""
1797 x_search_path=${x_libraries}
1798 if test -z "${x_search_path}"; then
1799 x_search_path=/usr/lib
1801 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1802 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1804 ${x_library}/X11/%L/%T/%N%C%S:\
1805 ${x_library}/X11/%l/%T/%N%C%S:\
1806 ${x_library}/X11/%T/%N%C%S:\
1807 ${x_library}/X11/%L/%T/%N%S:\
1808 ${x_library}/X11/%l/%T/%N%S:\
1809 ${x_library}/X11/%T/%N%S"
1810 if test x"${x_default_search_path}" = x; then
1811 x_default_search_path=${x_search_path}
1813 x_default_search_path="${x_search_path}:${x_default_search_path}"
1817 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1819 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1820 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1823 if test x"${x_includes}" = x; then
1824 bitmapdir=/usr/include/X11/bitmaps
1826 # accumulate include directories that have X11 bitmap subdirectories
1828 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1829 if test -d "${bmd}/X11/bitmaps"; then
1830 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1832 if test -d "${bmd}/bitmaps"; then
1833 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1836 bitmapdir=${bmd_acc#:}
1839 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1841 NS_GNUSTEP_CONFIG=no
1844 tmp_CPPFLAGS="$CPPFLAGS"
1845 tmp_CFLAGS="$CFLAGS"
1846 CPPFLAGS="$CPPFLAGS -x objective-c"
1847 CFLAGS="$CFLAGS -x objective-c"
1850 if test "${with_ns}" != no; then
1851 if test "${opsys}" = darwin; then
1853 ns_appdir=`pwd`/nextstep/Emacs.app
1854 ns_appbindir=${ns_appdir}/Contents/MacOS
1855 ns_appresdir=${ns_appdir}/Contents/Resources
1856 ns_appsrc=Cocoa/Emacs.base
1857 ns_fontfile=macfont.o
1858 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1860 NS_GNUSTEP_CONFIG=yes
1861 GNU_OBJC_CFLAGS=$flags
1862 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1863 elif test -f $GNUSTEP_CONFIG_FILE; then
1865 dnl FIXME sourcing this several times in subshells seems inefficient.
1866 GNUSTEP_SYSTEM_HEADERS=$(
1867 . $GNUSTEP_CONFIG_FILE
1868 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1870 GNUSTEP_SYSTEM_LIBRARIES=$(
1871 . $GNUSTEP_CONFIG_FILE
1872 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1874 dnl I seemed to need these as well with GNUstep-startup 0.25.
1875 GNUSTEP_LOCAL_HEADERS=$(
1876 . $GNUSTEP_CONFIG_FILE
1877 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1879 GNUSTEP_LOCAL_LIBRARIES=$(
1880 . $GNUSTEP_CONFIG_FILE
1881 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1883 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1884 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1885 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1886 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1887 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1888 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1889 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1890 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1891 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1892 dnl If they had chosen to either define it or not, we could have
1893 dnl just used AC_CHECK_DECL here.
1894 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1895 emacs_cv_objc_exceptions,
1896 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1897 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1901 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1902 if test $emacs_cv_objc_exceptions = yes; then
1903 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1904 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1905 [Define if GNUstep uses ObjC exceptions.])
1906 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1909 if test $NS_IMPL_GNUSTEP = yes; then
1910 ns_appdir=`pwd`/nextstep/Emacs.app
1911 ns_appbindir=${ns_appdir}
1912 ns_appresdir=${ns_appdir}/Resources
1913 ns_appsrc=GNUstep/Emacs.base
1914 ns_fontfile=nsfont.o
1917 dnl This is only used while we test the NS headers, it gets reset below.
1918 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1919 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1921 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1922 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1923 are required for a Nextstep build are missing or cannot be compiled.
1924 Either fix this, or re-configure with the option '--without-ns'.])])
1927 if test "${NS_IMPL_COCOA}" = "yes"; then
1928 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1929 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1931 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1932 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1935 error "Mac OS X 10.6 or newer required";
1939 ns_osx_have_106=yes,
1941 AC_MSG_RESULT([$ns_osx_have_106])
1943 if test $ns_osx_have_106 = no; then
1944 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1949 AC_SUBST(LIBS_GNUSTEP)
1951 INSTALL_ARCH_INDEP_EXTRA=install-etc
1952 ns_self_contained=no
1955 if test "${HAVE_NS}" = yes; then
1956 if test "$with_toolkit_scroll_bars" = "no"; then
1957 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1960 window_system=nextstep
1961 # set up packaging dirs
1962 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1963 ns_self_contained=yes
1964 prefix=${ns_appresdir}
1965 exec_prefix=${ns_appbindir}
1966 dnl This one isn't really used, only archlibdir is.
1967 libexecdir="\${ns_appbindir}/libexec"
1968 archlibdir="\${ns_appbindir}/libexec"
1969 etcdocdir="\${ns_appresdir}/etc"
1970 etcdir="\${ns_appresdir}/etc"
1971 dnl FIXME maybe set datarootdir instead.
1972 dnl That would also get applications, icons, man.
1973 infodir="\${ns_appresdir}/info"
1974 mandir="\${ns_appresdir}/man"
1975 lispdir="\${ns_appresdir}/lisp"
1976 test "$locallisppathset" = no && locallisppath=""
1977 INSTALL_ARCH_INDEP_EXTRA=
1980 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1982 CFLAGS="$tmp_CFLAGS"
1983 CPPFLAGS="$tmp_CPPFLAGS"
1984 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1985 AC_SUBST(ns_self_contained)
1987 AC_SUBST(NS_OBJC_OBJ)
1989 if test "${HAVE_NS}" = yes; then
1991 [if the Objective C compiler supports instancetype],
1992 [emacs_cv_objc_instancetype],
1993 [AC_LANG_PUSH([Objective C])
1995 [AC_LANG_SOURCE([[@interface Test
1996 + (instancetype)test;
1998 emacs_cv_objc_instancetype=yes,
1999 emacs_cv_objc_instancetype=no)
2000 AC_LANG_POP([Objective C])])
2002 if test x$emacs_cv_objc_instancetype = xyes ; then
2003 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2004 [Define if ObjC compiler supports instancetype natively.])
2016 if test "${with_w32}" != no; then
2019 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2020 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2021 cannot be found.])])
2024 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2027 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2032 if test "${opsys}" = "mingw32"; then
2033 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2034 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2035 #include <windows.h>
2036 #include <usp10.h>]],
2037 [[PIMAGE_NT_HEADERS pHeader;
2038 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2039 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2040 if test "${emacs_cv_w32api}" = "no"; then
2041 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2043 HAVE_W32=${emacs_cv_w32api}
2053 if test "${HAVE_W32}" = "yes"; then
2054 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2055 if test "$with_toolkit_scroll_bars" = "no"; then
2056 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2058 AC_CHECK_TOOL(WINDRES, [windres],
2059 [AC_MSG_ERROR([No resource compiler found.])])
2060 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2061 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2062 EMACSRES="emacs.res"
2063 case "$canonical" in
2064 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2065 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2067 dnl Construct something of the form "24,4,0,0" with 4 components.
2068 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2070 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2071 AC_SUBST(comma_version)
2072 AC_SUBST(comma_space_version)
2073 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2074 if test "${opsys}" = "cygwin"; then
2075 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2076 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2077 # Tell the linker that emacs.res is an object (which we compile from
2078 # the rc file), not a linker script.
2079 W32_RES_LINK="-Wl,emacs.res"
2081 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2082 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2083 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2084 W32_RES_LINK="\$(EMACSRES)"
2085 CLIENTRES="emacsclient.res"
2086 CLIENTW="emacsclientw\$(EXEEXT)"
2087 FIRSTFILE_OBJ=firstfile.o
2090 LIBS_ECLIENT="-lcomctl32"
2091 LIB_WSOCK32="-lwsock32"
2092 NTLIB="ntlib.$ac_objext"
2093 XARGS_LIMIT="-s 10000"
2097 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2098 W32_LIBS="-lkernel32"
2099 W32_OBJ="w32cygwinx.o"
2105 AC_SUBST(EMACS_MANIFEST)
2108 AC_SUBST(W32_RES_LINK)
2109 AC_SUBST(FIRSTFILE_OBJ)
2112 AC_SUBST(LIBS_ECLIENT)
2113 AC_SUBST(LIB_WSOCK32)
2115 AC_SUBST(XARGS_LIMIT)
2117 if test "${HAVE_W32}" = "yes"; then
2122 ## $window_system is now set to the window system we will
2130 case "${window_system}" in
2135 case "${with_x_toolkit}" in
2136 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2137 motif ) USE_X_TOOLKIT=MOTIF ;;
2139 term_header=gtkutil.h
2140 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2141 dnl USE_X_TOOLKIT is set.
2142 USE_X_TOOLKIT=none ;;
2143 gtk2 ) with_gtk2=yes
2144 term_header=gtkutil.h
2145 USE_X_TOOLKIT=none ;;
2146 gtk3 ) with_gtk3=yes
2147 term_header=gtkutil.h
2148 USE_X_TOOLKIT=none ;;
2149 no ) USE_X_TOOLKIT=none ;;
2150 dnl If user did not say whether to use a toolkit, make this decision later:
2151 dnl use the toolkit if we have gtk, or X11R5 or newer.
2152 * ) USE_X_TOOLKIT=maybe ;;
2156 term_header=nsterm.h
2159 term_header=w32term.h
2163 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2164 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2165 if test "$HAVE_XSERVER" = true ||
2166 test -n "$DISPLAY" ||
2168 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2169 test "$emacs_libX11" != '/usr/lib/libX11.*'
2172 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2173 were found. You should install the relevant development files for X
2174 and for the toolkit you want, such as Gtk+ or Motif. Also make
2175 sure you have development files for image handling, i.e.
2176 tiff, gif, jpeg, png and xpm.
2177 If you are sure you want Emacs compiled without X window support, pass
2183 # Does the opsystem file prohibit the use of the GNU malloc?
2184 # Assume not, until told otherwise.
2188 [whether malloc is Doug Lea style],
2189 [emacs_cv_var_doug_lea_malloc],
2190 [emacs_cv_var_doug_lea_malloc=no
2191 dnl Hooks do not work with address sanitization.
2192 if test "$emacs_cv_sanitize_address" != yes; then
2195 [[#include <malloc.h>
2196 static void hook (void) {}]],
2197 [[malloc_set_state (malloc_get_state ());
2198 __after_morecore_hook = hook;
2199 __malloc_initialize_hook = hook;]])],
2200 [emacs_cv_var_doug_lea_malloc=yes])
2202 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2207 test "$CANNOT_DUMP" = yes ||
2209 ## darwin ld insists on the use of malloc routines in the System framework.
2210 darwin | mingw32 | nacl | sol2-10) ;;
2211 cygwin | qnxnto | freebsd)
2214 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2217 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2218 && test "${UNEXEC_OBJ}" = unexelf.o; then
2224 if test "${system_malloc}" = "yes"; then
2225 AC_DEFINE([SYSTEM_MALLOC], 1,
2226 [Define to 1 to use the system memory allocator, even if it is not
2230 (The GNU allocators don't work with this system configuration.)"
2232 elif test "$hybrid_malloc" = yes; then
2233 AC_DEFINE(HYBRID_MALLOC, 1,
2234 [Define to use gmalloc before dumping and the system malloc after.])
2237 GNU_MALLOC_reason=" (only before dumping)"
2238 GMALLOC_OBJ=gmalloc.o
2241 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2242 VMLIMIT_OBJ=vm-limit.o
2244 AC_CHECK_HEADERS([sys/vlimit.h])
2245 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2248 [[extern char data_start[]; char ch;]],
2249 [[return data_start < &ch;]])],
2250 [emacs_cv_data_start=yes],
2251 [emacs_cv_data_start=no])])
2252 if test $emacs_cv_data_start = yes; then
2253 AC_DEFINE([HAVE_DATA_START], 1,
2254 [Define to 1 if data_start is the address of the start
2255 of the main data segment.])
2258 AC_SUBST([HYBRID_MALLOC])
2259 AC_SUBST(GMALLOC_OBJ)
2260 AC_SUBST(VMLIMIT_OBJ)
2262 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2263 if test "$GNU_MALLOC" = yes ; then
2265 (Using Doug Lea's new malloc from the GNU C Library.)"
2267 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2268 [Define to 1 if the system memory allocator is Doug Lea style,
2269 with malloc hooks and malloc_set_state.])
2271 ## Use mmap directly for allocating larger buffers.
2272 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2273 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2274 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2276 mingw32|gnu*) REL_ALLOC=no ;;
2280 if test x"${REL_ALLOC}" = x; then
2281 REL_ALLOC=${GNU_MALLOC}
2284 use_mmap_for_buffers=no
2286 mingw32) use_mmap_for_buffers=yes ;;
2290 if test $use_mmap_for_buffers = yes; then
2291 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2295 LIBS="$LIBS_SYSTEM $LIBS"
2297 dnl FIXME replace main with a function we actually want from this library.
2298 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2300 dnl Check for the POSIX thread library.
2302 AC_CHECK_HEADERS_ONCE(pthread.h)
2303 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2304 AC_CACHE_CHECK([for pthread library],
2305 [emacs_cv_pthread_lib],
2306 [emacs_cv_pthread_lib=no
2308 for emacs_pthread_lib in 'none needed' -lpthread; do
2309 case $emacs_pthread_lib in
2310 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2314 [[#include <pthread.h>
2316 sigset_t old_mask, new_mask;
2317 void noop (void) {}]],
2318 [[pthread_t th = pthread_self ();
2320 status += pthread_create (&th, 0, 0, 0);
2321 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2322 status += pthread_kill (th, 0);
2323 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2324 || defined DOUG_LEA_MALLOC)
2325 /* Test for pthread_atfork only if gmalloc uses it,
2326 as older-style hosts like MirBSD 10 lack it. */
2327 status += pthread_atfork (noop, noop, noop);
2330 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2332 if test "$emacs_cv_pthread_lib" != no; then
2336 if test "$emacs_cv_pthread_lib" != no; then
2337 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2338 case $emacs_cv_pthread_lib in
2339 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2341 ac_cv_func_pthread_sigmask=yes
2342 # Some systems optimize for single-threaded programs by default, and
2343 # need special flags to disable these optimizations. For example, the
2344 # definition of 'errno' in <errno.h>.
2347 AC_DEFINE([_REENTRANT], 1,
2348 [Define to 1 if your system requires this in multithreaded code.]);;
2350 AC_DEFINE([_THREAD_SAFE], 1,
2351 [Define to 1 if your system requires this in multithreaded code.]);;
2355 AC_SUBST([LIB_PTHREAD])
2357 AC_MSG_CHECKING([for thread support])
2359 if test "$with_threads" = yes; then
2360 if test "$emacs_cv_pthread_lib" != no; then
2361 AC_DEFINE(THREADS_ENABLED, 1,
2362 [Define to 1 if you want elisp thread support.])
2364 elif test "${opsys}" = "mingw32"; then
2365 dnl MinGW can do native Windows threads even without pthreads
2366 AC_DEFINE(THREADS_ENABLED, 1,
2367 [Define to 1 if you want elisp thread support.])
2371 AC_MSG_RESULT([$threads_enabled])
2373 dnl Check for need for bigtoc support on IBM AIX
2377 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2379 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2380 *) gdb_cv_bigtoc=-bbigtoc ;;
2383 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2384 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2389 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2390 # is for the tests that follow. We set them back later on.
2392 REAL_CFLAGS="$CFLAGS"
2393 REAL_CPPFLAGS="$CPPFLAGS"
2396 if test "${HAVE_X11}" = "yes"; then
2397 DEFS="$C_SWITCH_X_SITE $DEFS"
2398 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2400 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2401 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2403 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2404 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2405 # but it's more convenient here to set LD_RUN_PATH since this
2406 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2407 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2408 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2412 if test "${opsys}" = "gnu-linux"; then
2413 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2414 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2415 [[XOpenDisplay ("foo");]])],
2416 [xgnu_linux_first_failure=no],
2417 [xgnu_linux_first_failure=yes])
2418 if test "${xgnu_linux_first_failure}" = "yes"; then
2419 OLD_CPPFLAGS="$CPPFLAGS"
2421 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2422 LIBS="$LIBS -b i486-linuxaout"
2423 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2424 [[XOpenDisplay ("foo");]])],
2425 [xgnu_linux_second_failure=no],
2426 [xgnu_linux_second_failure=yes])
2427 if test "${xgnu_linux_second_failure}" = "yes"; then
2428 # If we get the same failure with -b, there is no use adding -b.
2429 # So leave it out. This plays safe.
2434 CPPFLAGS=$OLD_CPPFLAGS
2439 if test "x$emacs_cv_b_link" = xyes ; then
2440 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2441 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2445 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2446 # header files included from there.
2447 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2448 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2449 #include <X11/XKBlib.h>]],
2450 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2451 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2452 if test $emacs_cv_xkb = yes; then
2453 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2456 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2457 XScreenNumberOfScreen)
2460 if test "${window_system}" = "x11"; then
2461 AC_MSG_CHECKING(X11 version 6)
2462 AC_CACHE_VAL(emacs_cv_x11_version_6,
2463 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2464 [[#if XlibSpecificationRelease < 6
2467 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2468 if test $emacs_cv_x11_version_6 = yes; then
2469 AC_MSG_RESULT(6 or newer)
2470 AC_DEFINE(HAVE_X11R6, 1,
2471 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2472 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2473 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2477 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2478 [Define if you have usable X11R6-style XIM support.])
2482 AC_MSG_RESULT(before 6)
2487 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2489 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2490 if test "${with_rsvg}" != "no"; then
2491 RSVG_REQUIRED=2.11.0
2492 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2494 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2495 AC_SUBST(RSVG_CFLAGS)
2498 if test $HAVE_RSVG = yes; then
2499 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2500 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2501 # Windows loads librsvg dynamically
2502 if test "${opsys}" = "mingw32"; then
2510 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2511 if test "${with_imagemagick}" != "no"; then
2512 if test -n "$BREW"; then
2513 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2514 # pkgconfig can find it.
2515 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2518 EMACS_CHECK_MODULES([IMAGEMAGICK], [MagickWand >= 7])
2519 if test $HAVE_IMAGEMAGICK = yes; then
2520 AC_DEFINE([HAVE_IMAGEMAGICK7], 1, [Define to 1 if using ImageMagick7.])
2522 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2523 ## 6.8.2 makes Emacs crash; see Bug#13867.
2524 EMACS_CHECK_MODULES([IMAGEMAGICK], [Wand >= 6.3.5 Wand != 6.8.2])
2527 if test $HAVE_IMAGEMAGICK = yes; then
2530 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2531 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2532 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2533 MagickMergeImageLayers MagickAutoOrientImage])
2536 # Check that ImageMagick links. It does not link on Fedora 25
2537 # with './configure CC=clang', as pkg-config outputs flags like
2538 # -lomp that work for GCC but not Clang.
2539 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2543 if test $HAVE_IMAGEMAGICK = yes; then
2544 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2549 AC_SUBST([IMAGEMAGICK_CFLAGS])
2550 AC_SUBST([IMAGEMAGICK_LIBS])
2554 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2555 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2556 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2557 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2558 GETADDRINFO_A_LIBS="-lanl"
2559 AC_SUBST(GETADDRINFO_A_LIBS)
2564 gtk_term_header=$term_header
2567 if test "${opsys}" != "mingw32"; then
2568 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2571 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2573 dnl Checks for libraries.
2574 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2575 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2576 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2577 AC_MSG_ERROR($GTK_PKG_ERRORS)
2579 if test "$pkg_check_gtk" = "yes"; then
2580 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2581 GTK_OBJ=emacsgtkfixed.o
2582 gtk_term_header=gtkutil.h
2583 USE_GTK_TOOLKIT="GTK3"
2584 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2585 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2586 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2587 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2588 [Define to 1 to disable Glib deprecation warnings.])
2592 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2596 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2599 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2601 dnl Checks for libraries.
2602 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2603 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2604 if test "$pkg_check_gtk" = "no" &&
2605 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2607 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2609 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2616 if test x"$pkg_check_gtk" = xyes; then
2619 CFLAGS="$CFLAGS $GTK_CFLAGS"
2620 LIBS="$GTK_LIBS $LIBS"
2621 dnl Try to compile a simple GTK program.
2622 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2625 [[/* Check the Gtk and Glib APIs. */
2626 #include <gtk/gtk.h>
2627 #include <glib-object.h>
2629 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2633 GtkSettings *gs = 0;
2634 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2635 strict C prohibits this. Use gtk_main_iteration to test that the
2636 libraries are there. */
2637 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2638 0, 0, 0, G_CALLBACK (callback), 0))
2639 gtk_main_iteration ();
2641 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2642 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2644 if test "$USE_X_TOOLKIT" != "maybe"; then
2645 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2648 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2650 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2651 GTK_OBJ="gtkutil.o $GTK_OBJ"
2652 term_header=$gtk_term_header
2654 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2655 closing open displays. This is no problem if you just use
2656 one display, but if you use more than one and close one of them
2658 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2665 if test "${HAVE_GTK}" = "yes"; then
2667 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2668 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2669 if test "$with_toolkit_scroll_bars" != no; then
2670 with_toolkit_scroll_bars=yes
2673 dnl Check if we have the old file selection dialog declared and
2674 dnl in the link library. In 2.x it may be in the library,
2675 dnl but not declared if deprecated featured has been selected out.
2676 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2677 HAVE_GTK_FILE_SELECTION=no
2678 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2679 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2680 #include <gtk/gtk.h>])
2681 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2682 AC_CHECK_FUNCS(gtk_file_selection_new)
2685 dnl Same as above for gtk_handle_box.
2686 HAVE_GTK_HANDLE_BOX=no
2687 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2688 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2689 #include <gtk/gtk.h>])
2690 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2691 AC_CHECK_FUNCS(gtk_handle_box_new)
2694 dnl Same as above for gtk_tearoff_menu_item.
2695 HAVE_GTK_TEAROFF_MENU_ITEM=no
2696 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2697 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2698 #include <gtk/gtk.h>])
2699 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2700 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2703 dnl Check for functions introduced in 2.14 and later.
2704 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2705 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2706 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2707 gtk_orientable_set_orientation \
2708 gtk_window_set_has_resize_grip)
2710 term_header=gtkutil.h
2714 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2717 if test "$with_xwidgets" != "no"; then
2718 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2719 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2721 WEBKIT_REQUIRED=2.12
2722 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2723 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2724 HAVE_XWIDGETS=$HAVE_WEBKIT
2725 test $HAVE_XWIDGETS = yes ||
2726 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2728 XWIDGETS_OBJ=xwidget.o
2729 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2731 AC_SUBST(XWIDGETS_OBJ)
2736 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2737 dnl other platforms.
2740 if test "${with_dbus}" = "yes"; then
2741 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2742 if test "$HAVE_DBUS" = yes; then
2743 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2744 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2745 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2748 LIBS="$LIBS $DBUS_LIBS"
2749 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2750 dbus_type_is_valid \
2751 dbus_validate_bus_name \
2752 dbus_validate_path \
2753 dbus_validate_interface \
2754 dbus_validate_member)
2759 AC_SUBST(DBUS_CFLAGS)
2763 dnl GSettings has been tested under GNU/Linux only.
2765 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2766 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2767 if test "$HAVE_GSETTINGS" = "yes"; then
2769 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2771 LIBS="$LIBS $GSETTINGS_LIBS"
2772 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2775 [[/* Check that gsettings really is present. */
2776 #include <glib-object.h>
2777 #include <gio/gio.h>
2780 GSettings *settings;
2781 GVariant *val = g_settings_get_value (settings, "");
2783 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2785 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2786 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2787 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2788 SETTINGS_LIBS="$GSETTINGS_LIBS"
2789 test "$with_gconf" = "yes" || with_gconf=no
2796 dnl GConf has been tested under GNU/Linux only.
2797 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2799 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2800 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2801 if test "$HAVE_GCONF" = yes; then
2802 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2803 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2804 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2805 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2809 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2810 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2811 if test "$HAVE_GOBJECT" = "yes"; then
2812 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2813 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2815 SAVE_CFLAGS="$CFLAGS"
2817 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2818 LIBS="$SETTINGS_LIBS $LIBS"
2819 CFLAGS="$SAVE_CFLAGS"
2822 AC_SUBST(SETTINGS_CFLAGS)
2823 AC_SUBST(SETTINGS_LIBS)
2826 dnl SELinux is available for GNU/Linux only.
2829 if test "${with_selinux}" = "yes"; then
2830 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2831 if test "$HAVE_LIBSELINUX" = yes; then
2832 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2833 LIBSELINUX_LIBS=-lselinux
2836 AC_SUBST(LIBSELINUX_LIBS)
2839 if test "${with_gnutls}" = "yes" ; then
2840 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2841 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2842 if test "${HAVE_GNUTLS}" = "yes"; then
2843 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2846 # Windows loads GnuTLS dynamically
2847 if test "${opsys}" = "mingw32"; then
2852 AC_SUBST(LIBGNUTLS_LIBS)
2853 AC_SUBST(LIBGNUTLS_CFLAGS)
2856 if test "${with_libsystemd}" = "yes" ; then
2857 dnl This code has been tested with libsystemd 222 and later.
2858 dnl FIXME: Find the earliest version number for which Emacs should work,
2859 dnl and change '222' to that number.
2860 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2861 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2862 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2863 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2867 AC_SUBST(LIBSYSTEMD_LIBS)
2868 AC_SUBST(LIBSYSTEMD_CFLAGS)
2873 if test "${with_json}" = yes; then
2874 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2875 [HAVE_JSON=yes], [HAVE_JSON=no])
2876 if test "${HAVE_JSON}" = yes; then
2877 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2881 # Windows loads libjansson dynamically
2882 if test "${opsys}" = "mingw32"; then
2888 AC_SUBST(JSON_CFLAGS)
2894 dnl MS Windows native file monitor is available for mingw32 only.
2895 case $with_file_notification,$opsys in
2897 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2898 this is only supported on MS-Windows native and MinGW32 builds.
2899 Consider using gfile instead.])
2901 w32,* | yes,mingw32)
2902 AC_CHECK_HEADER(windows.h)
2903 if test "$ac_cv_header_windows_h" = yes ; then
2904 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2905 NOTIFY_OBJ=w32notify.o
2906 NOTIFY_SUMMARY="yes (w32)"
2910 dnl inotify is available only on GNU/Linux.
2911 case $with_file_notification,$NOTIFY_OBJ in
2913 AC_CHECK_HEADER(sys/inotify.h)
2914 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2915 AC_CHECK_FUNC(inotify_init1)
2916 if test "$ac_cv_func_inotify_init1" = yes; then
2917 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2918 NOTIFY_OBJ=inotify.o
2919 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2924 dnl kqueue is available on BSD-like systems.
2925 case $with_file_notification,$NOTIFY_OBJ in
2927 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2928 if test "$HAVE_KQUEUE" = "yes"; then
2929 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2930 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2931 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2932 NOTIFY_LIBS=$KQUEUE_LIBS
2934 NOTIFY_SUMMARY="yes -lkqueue"
2936 AC_SEARCH_LIBS(kqueue, [])
2937 if test "$ac_cv_search_kqueue" != no; then
2938 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2940 NOTIFY_SUMMARY="yes (kqueue)"
2945 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2946 dnl has been added in glib 2.24. It has been tested under
2948 case $with_file_notification,$NOTIFY_OBJ in
2950 if test "${HAVE_NS}" = yes; then
2951 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2952 Consider kqueue instead.])
2954 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2955 if test "$HAVE_GFILENOTIFY" = "yes"; then
2956 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2957 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2958 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2959 NOTIFY_OBJ=gfilenotify.o
2960 NOTIFY_SUMMARY="yes -lgio (gfile)"
2965 case $with_file_notification,$NOTIFY_OBJ in
2966 yes,* | no,* | *,?*) ;;
2967 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2970 if test -n "$NOTIFY_OBJ"; then
2971 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2973 AC_SUBST(NOTIFY_CFLAGS)
2974 AC_SUBST(NOTIFY_LIBS)
2975 AC_SUBST(NOTIFY_OBJ)
2977 dnl Do not put whitespace before the #include statements below.
2978 dnl Older compilers (eg sunos4 cc) choke on it.
2981 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2982 if test "$with_xaw3d" != no; then
2983 AC_CACHE_VAL(emacs_cv_xaw3d,
2984 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2985 #include <X11/Intrinsic.h>
2986 #include <X11/Xaw3d/Simple.h>]],
2988 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2989 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2990 emacs_cv_xaw3d=no)])
2994 if test $emacs_cv_xaw3d = yes; then
2995 AC_MSG_CHECKING(for xaw3d)
2996 AC_MSG_RESULT([yes; using Lucid toolkit])
3000 AC_DEFINE(HAVE_XAW3D, 1,
3001 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3003 AC_MSG_CHECKING(for xaw3d)
3005 AC_MSG_CHECKING(for libXaw)
3006 AC_CACHE_VAL(emacs_cv_xaw,
3007 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3008 #include <X11/Intrinsic.h>
3009 #include <X11/Xaw/Simple.h>]],
3013 if test $emacs_cv_xaw = yes; then
3014 AC_MSG_RESULT([yes; using Lucid toolkit])
3017 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3018 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3020 AC_MSG_ERROR([No X toolkit could be found.
3021 If you are sure you want Emacs compiled without an X toolkit, pass
3023 to configure. Otherwise, install the development libraries for the toolkit
3024 that you want to use (e.g. Gtk+) and re-run configure.])
3029 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3033 if test "${USE_X_TOOLKIT}" != "none"; then
3034 AC_MSG_CHECKING(X11 toolkit version)
3035 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3036 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3037 [[#if XtSpecificationRelease < 6
3040 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3041 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3042 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3043 AC_MSG_RESULT(6 or newer)
3044 AC_DEFINE(HAVE_X11XTR6, 1,
3045 [Define to 1 if you have the X11R6 or newer version of Xt.])
3046 LIBXTR6="-lSM -lICE"
3048 ## Use libw.a along with X11R6 Xt.
3049 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3052 AC_MSG_RESULT(before 6)
3055 dnl If using toolkit, check whether libXmu.a exists.
3056 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3058 if test x$HAVE_X11XTR6 = xyes; then
3059 OTHERLIBS='-lXt -lSM -lICE'
3063 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3064 if test "X$LIBS" != "X$OLDLIBS"; then
3065 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3068 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3074 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3075 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3076 if test -d /usr/include/openmotif; then
3077 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3078 emacs_cv_openmotif=yes
3079 case "$canonical" in
3080 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3081 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3084 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3087 emacs_cv_openmotif=no
3089 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3090 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3091 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3094 Motif version prior to 2.1.
3096 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3097 if test $emacs_cv_motif_version_2_1 = yes; then
3098 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3099 if test x$emacs_cv_openmotif = xyes; then
3100 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3103 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3104 # We put this in CFLAGS temporarily to precede other -I options
3105 # that might be in CFLAGS temporarily.
3106 # We put this in CPPFLAGS where it precedes the other -I options.
3107 OLD_CPPFLAGS=$CPPFLAGS
3109 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3110 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3111 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3113 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3114 if test $emacs_cv_lesstif = yes; then
3115 # Make sure this -I option remains in CPPFLAGS after it is set
3116 # back to REAL_CPPFLAGS.
3117 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3118 # have those other -I options anyway. Ultimately, having this
3119 # directory ultimately in CPPFLAGS will be enough.
3120 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3121 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3124 CPPFLAGS=$OLD_CPPFLAGS
3127 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3128 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3131 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3132 dnl using Motif or Xaw3d is available, and unless
3133 dnl --with-toolkit-scroll-bars=no was specified.
3135 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3136 [Define to 1 if we should use toolkit scroll bars.])dnl
3137 USE_TOOLKIT_SCROLL_BARS=no
3138 if test "${with_toolkit_scroll_bars}" != "no"; then
3139 if test "${USE_X_TOOLKIT}" != "none"; then
3140 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3141 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3143 USE_TOOLKIT_SCROLL_BARS=yes
3144 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3145 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3146 USE_TOOLKIT_SCROLL_BARS=yes
3148 elif test "${HAVE_GTK}" = "yes"; then
3149 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3150 USE_TOOLKIT_SCROLL_BARS=yes
3151 elif test "${HAVE_NS}" = "yes"; then
3152 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3153 USE_TOOLKIT_SCROLL_BARS=yes
3154 elif test "${HAVE_W32}" = "yes"; then
3155 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3156 USE_TOOLKIT_SCROLL_BARS=yes
3160 dnl See if XIM is available.
3161 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3162 #include <X11/Xlib.h>
3163 #include <X11/Xresource.h>]],
3164 [[XIMProc callback;]])],
3166 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3169 dnl Note this is non-standard. --with-xim does not control whether
3170 dnl XIM support is compiled in, it only affects the runtime default of
3171 dnl use_xim in xterm.c.
3172 if test "${with_xim}" != "no"; then
3173 AC_DEFINE(USE_XIM, 1,
3174 [Define to 1 to default runtime use of XIM to on.])
3178 if test "${HAVE_XIM}" != "no"; then
3180 if test "$GCC" = yes; then
3181 CFLAGS="$CFLAGS --pedantic-errors"
3183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3184 #include <X11/Xlib.h>
3185 #include <X11/Xresource.h>]],
3191 XPointer *client_data;
3193 /* If we're not using GCC, it's probably not XFree86, and this is
3194 probably right, but we can't use something like --pedantic-errors. */
3195 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3196 char*, XIMProc, XPointer*);
3198 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3200 [emacs_cv_arg6_star=yes])
3201 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3202 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3203 either XPointer or XPointer*.])dnl
3204 if test "$emacs_cv_arg6_star" = yes; then
3205 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3207 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3212 ### Start of font-backend (under any platform) section.
3213 # (nothing here yet -- this is a placeholder)
3214 ### End of font-backend (under any platform) section.
3216 ### Start of font-backend (under X11) section.
3217 if test "${HAVE_X11}" = "yes"; then
3218 ## Use -lXft if available, unless '--with-xft=no'.
3220 if test "x${with_x}" = "xno"; then
3224 if test "$with_xft" != no; then
3225 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3226 with_xft=$HAVE_FONTCONFIG
3229 if test "x${with_xft}" != "xno"; then
3231 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3232 ## Because xterm.c uses XRenderQueryExtension when XFT is
3233 ## enabled, we also need to link to -lXrender.
3235 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3236 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3237 OLD_CPPFLAGS="$CPPFLAGS"
3238 OLD_CFLAGS="$CFLAGS"
3240 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3241 CFLAGS="$CFLAGS $XFT_CFLAGS"
3242 XFT_LIBS="-lXrender $XFT_LIBS"
3243 LIBS="$XFT_LIBS $LIBS"
3244 AC_CHECK_HEADER(X11/Xft/Xft.h,
3245 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3246 [[#include <X11/X.h>]])
3248 if test "${HAVE_XFT}" = "yes"; then
3249 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3251 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3252 fi # "${HAVE_XFT}" = "yes"
3253 CPPFLAGS=$OLD_CPPFLAGS
3257 # Make sure XFT is disabled if we found XFT but not XRender
3259 fi # "$HAVE_XFT" != no
3260 fi # "x${with_xft}" != "xno"
3262 ## We used to allow building with FreeType and without Xft.
3263 ## However, the ftx font backend driver is not in good shape.
3264 if test "$HAVE_XFT" != "yes"; then
3265 dnl For the "Does Emacs use" message at the end.
3269 dnl Strict linkers fail with
3270 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3271 dnl if -lfreetype is not specified.
3272 dnl The following is needed to set FREETYPE_LIBS.
3273 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3275 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3279 if test "${HAVE_FREETYPE}" = "yes"; then
3280 AC_DEFINE(HAVE_FREETYPE, 1,
3281 [Define to 1 if using the freetype and fontconfig libraries.])
3282 if test "${with_libotf}" != "no"; then
3283 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3284 if test "$HAVE_LIBOTF" = "yes"; then
3285 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3286 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3287 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3288 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3289 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3290 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3291 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3293 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3294 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3295 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3299 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3300 dnl Does the new font backend require it, or can it work without it?
3304 if test "${HAVE_LIBOTF}" = yes; then
3305 if test "${with_m17n_flt}" != "no"; then
3306 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3307 if test "$HAVE_M17N_FLT" = "yes"; then
3308 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3319 ### End of font-backend (under X11) section.
3321 AC_SUBST(FREETYPE_CFLAGS)
3322 AC_SUBST(FREETYPE_LIBS)
3323 AC_SUBST(FONTCONFIG_CFLAGS)
3324 AC_SUBST(FONTCONFIG_LIBS)
3325 AC_SUBST(LIBOTF_CFLAGS)
3326 AC_SUBST(LIBOTF_LIBS)
3327 AC_SUBST(M17N_FLT_CFLAGS)
3328 AC_SUBST(M17N_FLT_LIBS)
3331 if test "${HAVE_X11}" = "yes"; then
3332 if test "${with_cairo}" != "no"; then
3333 CAIRO_REQUIRED=1.12.0
3334 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3335 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3336 if test $HAVE_CAIRO = yes; then
3337 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3339 AC_MSG_ERROR([cairo requested but not found.])
3342 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3343 LIBS="$LIBS $CAIRO_LIBS"
3344 AC_SUBST(CAIRO_CFLAGS)
3345 AC_SUBST(CAIRO_LIBS)
3349 if test "${HAVE_X11}" = "yes"; then
3350 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3351 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3352 if test "${HAVE_XCB}" = "yes"; then
3353 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3354 if test "${HAVE_X11_XCB}" = "yes"; then
3355 AC_DEFINE(USE_XCB, 1,
3356 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3357 X11/XCB programming.])
3358 XCB_LIBS="-lX11-xcb -lxcb"
3364 ### Use -lXpm if available, unless '--with-xpm=no'.
3365 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3366 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3367 ### we need to set LDFLAGS accordingly.
3370 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3371 if test "${with_xpm}" != "no"; then
3372 SAVE_LDFLAGS="$LDFLAGS"
3373 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3374 AC_CHECK_HEADER(noX/xpm.h,
3375 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3376 if test "${HAVE_XPM}" = "yes"; then
3377 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3378 [emacs_cv_cpp_xpm_return_alloc_pixels],
3379 [AC_EGREP_CPP(no_return_alloc_pixels,
3380 [#include "noX/xpm.h"
3381 #ifndef XpmReturnAllocPixels
3382 no_return_alloc_pixels
3384 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3385 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3387 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3389 LDFLAGS="$SAVE_LDFLAGS"
3394 if test "${HAVE_XPM}" = "yes"; then
3395 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3400 if test "${HAVE_X11}" = "yes"; then
3401 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3402 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3404 if test "${with_xpm}" != "no"; then
3405 AC_CHECK_HEADER(X11/xpm.h,
3406 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3407 if test "${HAVE_XPM}" = "yes"; then
3408 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3409 [emacs_cv_cpp_xpm_return_alloc_pixels],
3410 [AC_EGREP_CPP(no_return_alloc_pixels,
3411 [#include "X11/xpm.h"
3412 #ifndef XpmReturnAllocPixels
3413 no_return_alloc_pixels
3415 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3416 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3418 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3424 if test "${HAVE_XPM}" = "yes"; then
3425 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3427 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3428 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3433 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3434 ### slightly different requirements wrt image libraries (it doesn't
3435 ### use -lXpm because it loads the xpm shared library dynamically at
3437 if test "${opsys}" = "mingw32"; then
3438 if test "${with_xpm}" != "no"; then
3439 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3443 if test "${HAVE_XPM}" = "yes"; then
3444 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3450 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3453 if test "${NS_IMPL_COCOA}" = yes; then
3454 : # Cocoa provides its own jpeg support, so do nothing.
3455 elif test "${with_jpeg}" != "no"; then
3456 AC_CACHE_CHECK([for jpeglib 6b or later],
3459 for emacs_cv_jpeglib in yes -ljpeg no; do
3460 case $emacs_cv_jpeglib in
3463 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3467 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3468 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3469 #include <jpeglib.h>
3471 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3472 struct jpeg_decompress_struct cinfo;
3475 jpeg_create_decompress (&cinfo);
3476 WARNMS (&cinfo, JWRN_JPEG_EOF);
3477 jpeg_destroy_decompress (&cinfo);
3479 [emacs_link_ok=yes],
3482 test $emacs_link_ok = yes && break
3484 if test "$emacs_cv_jpeglib" != no; then
3486 AC_DEFINE([HAVE_JPEG], 1,
3487 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3488 ### mingw32 doesn't use -ljpeg, since it loads the library
3489 ### dynamically when needed, and doesn't want a run-time
3490 ### dependency on the jpeglib DLL.
3491 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3492 && LIBJPEG=$emacs_cv_jpeglib
3500 if test "${with_lcms2}" != "no"; then
3501 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3503 if test "${HAVE_LCMS2}" = "yes"; then
3504 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3505 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3506 if test "${opsys}" = "mingw32"; then
3510 AC_SUBST(LCMS2_CFLAGS)
3511 AC_SUBST(LCMS2_LIBS)
3515 if test "${with_zlib}" != "no"; then
3517 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3519 case $ac_cv_search_inflateEnd in
3520 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3523 if test "${HAVE_ZLIB}" = "yes"; then
3524 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3525 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3526 if test "${opsys}" = "mingw32"; then
3532 ### Dynamic modules support
3537 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3538 *) MODULES_SUFFIX=".so" ;;
3540 if test "${with_modules}" != "no"; then
3546 cygwin|mingw32|darwin)
3550 # BSD systems have dlopen in libc.
3551 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3555 if test "${HAVE_MODULES}" = no; then
3556 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3559 LIBS="$LIBS $LIBMODULES"
3560 AC_CHECK_FUNCS([dladdr dlfunc])
3565 if test "${HAVE_MODULES}" = yes; then
3566 MODULES_OBJ="dynlib.o emacs-module.o"
3567 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3568 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3569 [System extension for dynamic libraries])
3571 AC_SUBST(MODULES_OBJ)
3572 AC_SUBST(LIBMODULES)
3573 AC_SUBST(HAVE_MODULES)
3574 AC_SUBST(MODULES_SUFFIX)
3576 AC_CONFIG_FILES([src/emacs-module.h])
3577 AC_SUBST_FILE([module_env_snippet_25])
3578 AC_SUBST_FILE([module_env_snippet_26])
3579 module_env_snippet_25="$srcdir/src/module-env-25.h"
3580 module_env_snippet_26="$srcdir/src/module-env-26.h"
3582 ### Use -lpng if available, unless '--with-png=no'.
3586 if test "${NS_IMPL_COCOA}" = yes; then
3587 : # Cocoa provides its own png support, so do nothing.
3588 elif test "${with_png}" != no; then
3589 # mingw32 loads the library dynamically.
3590 if test "$opsys" = mingw32; then
3591 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3592 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3593 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3594 if test $HAVE_PNG = yes; then
3597 # Test old way in case pkg-config doesn't have it (older machines).
3598 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3600 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3601 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3602 # libpng-config does not work; configure by hand.
3603 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3604 # in /usr/include/libpng.
3605 if test -r /usr/include/libpng/png.h &&
3606 test ! -r /usr/include/png.h; then
3607 png_cflags=-I/usr/include/libpng
3615 CFLAGS="$CFLAGS $png_cflags"
3616 LIBS="$png_ldflags -lz -lm $LIBS"
3618 [AC_LANG_PROGRAM([[#include <png.h>]],
3619 [[return !png_get_channels (0, 0);]])],
3621 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3622 LIBPNG=$png_ldflags])
3625 AC_MSG_RESULT([$HAVE_PNG])
3628 # $LIBPNG requires explicit -lz in some cases.
3629 # We don't know what those cases are, exactly, so play it safe and
3630 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3631 case " $LIBPNG ",$LIBZ in
3632 *' -lz '*, | *' ',?*) ;;
3633 *) LIBPNG="$LIBPNG -lz" ;;
3637 if test $HAVE_PNG = yes; then
3638 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3641 CFLAGS="$CFLAGS $PNG_CFLAGS"
3642 AC_CHECK_DECL([png_longjmp],
3644 [AC_DEFINE([PNG_DEPSTRUCT], [],
3645 [Define to empty to suppress deprecation warnings when building
3646 with --enable-gcc-warnings and with libpng versions before 1.5,
3647 which lack png_longjmp.])],
3653 AC_SUBST(PNG_CFLAGS)
3655 ### Use -ltiff if available, unless '--with-tiff=no'.
3656 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3659 if test "${opsys}" = "mingw32"; then
3660 if test "${with_tiff}" != "no"; then
3661 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3663 if test "${HAVE_TIFF}" = "yes"; then
3664 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3666 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3667 if test "${with_tiff}" != "no"; then
3668 AC_CHECK_HEADER(tiffio.h,
3670 # At least one tiff package requires the jpeg library.
3671 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3672 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3675 if test "${HAVE_TIFF}" = "yes"; then
3676 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3677 dnl FIXME -lz -lm, as per libpng?
3683 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3684 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3687 if test "${opsys}" = "mingw32"; then
3688 if test "${with_gif}" != "no"; then
3689 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3691 if test "${HAVE_GIF}" = "yes"; then
3692 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3694 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3695 || test "${HAVE_W32}" = "yes"; then
3696 AC_CHECK_HEADER(gif_lib.h,
3697 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3698 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3699 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3700 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3702 if test "$HAVE_GIF" = yes; then
3704 elif test "$HAVE_GIF" = maybe; then
3705 # If gif_lib.h but no libgif, try libungif.
3706 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3707 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3710 if test "${HAVE_GIF}" = "yes"; then
3711 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3716 dnl Check for required libraries.
3719 if test "${HAVE_X11}" = "yes"; then
3720 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3721 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3722 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3723 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3724 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3725 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3726 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3727 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3728 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3729 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3731 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3732 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3733 if test "X${MISSING}" != X; then
3734 AC_MSG_ERROR([The following required libraries were not found:
3736 Maybe some development libraries/packages are missing?
3737 If you don't want to link with them give
3739 as options to configure])
3742 ### Use -lgpm if available, unless '--with-gpm=no'.
3745 if test "${with_gpm}" != "no"; then
3746 AC_CHECK_HEADER(gpm.h,
3747 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3749 if test "${HAVE_GPM}" = "yes"; then
3750 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3756 dnl Check for malloc/malloc.h on darwin
3757 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3760 ### Use NeXTstep API to implement GUI.
3761 if test "${HAVE_NS}" = "yes"; then
3762 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3763 if test "${NS_IMPL_COCOA}" = "yes"; then
3764 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3766 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3767 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3768 if test $NS_GNUSTEP_CONFIG != yes; then
3769 # See also .m.o rule in src/Makefile.in. */
3770 # FIXME: are all these flags really needed? Document here why. */
3771 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3772 ## Extra CFLAGS applied to src/*.m files.
3773 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3779 ### Use session management (-lSM -lICE) if available
3782 if test "${HAVE_X11}" = "yes"; then
3783 AC_CHECK_HEADER(X11/SM/SMlib.h,
3784 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3786 if test "${HAVE_X_SM}" = "yes"; then
3787 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3793 ### Use XRandr (-lXrandr) if available
3795 if test "${HAVE_X11}" = "yes"; then
3796 XRANDR_REQUIRED=1.2.2
3797 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3798 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3799 if test $HAVE_XRANDR = no; then
3800 # Test old way in case pkg-config doesn't have it (older machines).
3801 # Include Xrender.h by hand to work around bug in older Xrandr.h
3802 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3803 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3804 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3805 [], [AC_INCLUDES_DEFAULT
3806 #include <X11/extensions/Xrender.h>])
3807 if test $HAVE_XRANDR = yes; then
3808 XRANDR_LIBS=-lXrandr
3811 if test $HAVE_XRANDR = yes; then
3812 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3815 AC_SUBST(XRANDR_CFLAGS)
3816 AC_SUBST(XRANDR_LIBS)
3818 ### Use Xinerama (-lXinerama) if available
3820 if test "${HAVE_X11}" = "yes"; then
3821 XINERAMA_REQUIRED=1.0.2
3822 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3823 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3824 if test $HAVE_XINERAMA = no; then
3825 # Test old way in case pkg-config doesn't have it (older machines).
3826 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3827 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3828 if test $HAVE_XINERAMA = yes; then
3829 XINERAMA_LIBS=-lXinerama
3832 if test $HAVE_XINERAMA = yes; then
3833 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3836 AC_SUBST(XINERAMA_CFLAGS)
3837 AC_SUBST(XINERAMA_LIBS)
3839 ### Use Xfixes (-lXfixes) if available
3841 if test "${HAVE_X11}" = "yes"; then
3842 XFIXES_REQUIRED=4.0.0
3843 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3844 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3845 if test $HAVE_XFIXES = no; then
3846 # Test old way in case pkg-config doesn't have it (older machines).
3847 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3848 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3849 if test $HAVE_XFIXES = yes; then
3850 XFIXES_LIBS=-lXfixes
3853 if test $HAVE_XFIXES = yes; then
3854 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3857 AC_SUBST(XFIXES_CFLAGS)
3858 AC_SUBST(XFIXES_LIBS)
3860 ### Use Xdbe (-lXdbe) if available
3862 if test "${HAVE_X11}" = "yes"; then
3863 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3864 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3866 [#include <X11/Xlib.h>
3868 if test $HAVE_XDBE = yes; then
3871 if test $HAVE_XDBE = yes; then
3872 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3875 AC_SUBST(XDBE_CFLAGS)
3878 ### Use libxml (-lxml2) if available
3879 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3881 if test "${with_xml2}" != "no"; then
3882 ### I'm not sure what the version number should be, so I just guessed.
3883 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3884 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3885 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3886 SAVE_CPPFLAGS="$CPPFLAGS"
3887 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3888 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3889 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3891 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3895 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
3896 AC_CHECK_HEADER(libxml/HTMLparser.h,
3897 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3898 [#include <libxml/HTMLparser.h>])])
3899 CPPFLAGS="$SAVE_CPPFLAGS"
3900 if test "${HAVE_LIBXML2}" = "yes"; then
3901 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
3902 LIBXML2_LIBS="-lxml2"
3905 if test "${HAVE_LIBXML2}" = "yes"; then
3906 if test "${opsys}" != "mingw32"; then
3907 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3912 if test "${HAVE_LIBXML2}" = "yes"; then
3913 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3920 AC_SUBST(LIBXML2_LIBS)
3921 AC_SUBST(LIBXML2_CFLAGS)
3925 if test ! "$with_mailutils"; then
3926 # Check for mail-locking functions in a "mail" library. Probably this should
3927 # have the same check as for liblockfile below.
3928 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3929 if test $have_mail = yes; then
3931 AC_DEFINE([HAVE_LIBMAIL], [1],
3932 [Define to 1 if you have the 'mail' library (-lmail).])
3935 LIBS="$LIBS_MAIL $LIBS"
3936 AC_CHECK_FUNCS([touchlock])
3939 dnl Debian, at least:
3940 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3941 if test $have_lockfile = yes; then
3942 LIBS_MAIL=-llockfile
3943 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3944 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3946 # If we have the shared liblockfile, assume we must use it for mail
3947 # locking (e.g. Debian). If we couldn't link against liblockfile
3948 # (no liblockfile.a installed), ensure that we don't need to.
3949 dnl This works for files generally, not just executables.
3950 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3951 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3952 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3953 if test "$ac_cv_prog_liblockfile" = yes; then
3954 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3955 This probably means that movemail could lose mail.
3956 There may be a 'development' package to install containing liblockfile.])
3959 AC_CHECK_HEADERS([maillock.h])
3961 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3962 ## interlock access to the mail spool. The alternative is a lock file named
3963 ## /usr/spool/mail/$USER.lock.
3966 aix4-2) mail_lock="lockf" ;;
3968 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3970 ## On GNU/Linux systems, both methods are used by various mail programs.
3971 ## I assume most people are using newer mailers that have heard of flock.
3972 ## Change this if you need to.
3973 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3974 ## configure gets the right answers, and that means *NOT* using flock.
3975 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3976 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3977 ## Debian maintainer hasn't provided a clean fix for Emacs.
3978 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3979 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3980 ## correct logic. -- fx
3981 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3982 ## liblockfile is a Free Software replacement for libmail, used on
3983 ## Debian systems and elsewhere. -rfr.
3986 if test $have_mail = yes || test $have_lockfile = yes; then
3987 test $ac_cv_header_maillock_h = yes && mail_lock=no
3991 mail_lock="none-needed" ;;
3995 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3996 [Define if the mailer uses flock to interlock the mail spool.]);;
3998 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3999 [Define if the mailer uses lockf to interlock the mail spool.]);;
4003 *) BLESSMAIL_TARGET="need-blessmail" ;;
4006 AC_SUBST([BLESSMAIL_TARGET])
4007 AC_SUBST([LIBS_MAIL])
4010 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4011 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4012 getrusage get_current_dir_name \
4013 lrand48 random rint trunc \
4014 select getpagesize setlocale newlocale \
4015 getrlimit setrlimit shutdown \
4016 pthread_sigmask strsignal setitimer \
4017 sendto recvfrom getsockname getifaddrs freeifaddrs \
4019 getpwent endpwent getgrent endgrent \
4020 cfmakeraw cfsetspeed __executable_start log2 prctl)
4023 dnl No need to check for posix_memalign if aligned_alloc works.
4024 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4025 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4027 dnl Cannot use AC_CHECK_FUNCS
4028 AC_CACHE_CHECK([for __builtin_frame_address],
4029 [emacs_cv_func___builtin_frame_address],
4030 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4031 [emacs_cv_func___builtin_frame_address=yes],
4032 [emacs_cv_func___builtin_frame_address=no])])
4033 if test $emacs_cv_func___builtin_frame_address = yes; then
4034 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4035 [Define to 1 if you have the '__builtin_frame_address' function.])
4037 AC_CACHE_CHECK([for __builtin_unwind_init],
4038 emacs_cv_func___builtin_unwind_init,
4039 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4040 emacs_cv_func___builtin_unwind_init=yes,
4041 emacs_cv_func___builtin_unwind_init=no)])
4042 if test $emacs_cv_func___builtin_unwind_init = yes; then
4043 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4044 [Define to 1 if you have the '__builtin_unwind_init' function.])
4047 AC_CHECK_HEADERS_ONCE(sys/un.h)
4052 AC_CHECK_FUNCS(grantpt)
4054 # PTY-related GNU extensions.
4055 AC_CHECK_FUNCS(getpt posix_openpt)
4057 dnl Run a test program that contains a call to tputs, a call that is
4058 dnl never executed. This tests whether a pre-'main' dynamic linker
4059 dnl works with the library. It's too much trouble to actually call
4060 dnl tputs in the test program, due to portability hassles. When
4061 dnl cross-compiling, assume the test program will run if it links.
4062 AC_DEFUN([tputs_link_source], [
4064 [[extern void tputs (const char *, int, int (*)(int));
4065 int main (int argc, char **argv)
4068 tputs (argv[0], 0, 0);
4072 # Check this now, so that we will NOT find the above functions in ncurses.
4073 # That is because we have not set up to link ncurses in lib-src.
4074 # It's better to believe a function is not available
4075 # than to expect to find it in ncurses.
4076 # Also we need tputs and friends to be able to build at all.
4077 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4078 [if test "${opsys}" = "mingw32"; then
4079 emacs_cv_tputs_lib='none required'
4081 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4082 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4084 if test -z "$tputs_library"; then
4085 emacs_cv_tputs_lib='none required'
4087 emacs_cv_tputs_lib=-l$tputs_library
4088 LIBS="$emacs_cv_tputs_lib $LIBS"
4090 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4091 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4093 if test "X$emacs_cv_tputs_lib" != Xno; then
4098 AS_CASE(["$emacs_cv_tputs_lib"],
4099 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4100 The following libraries were tried (in order):
4101 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4102 Please try installing whichever of these libraries is most appropriate
4103 for your system, together with its header files.
4104 For example, a libncurses-dev(el) or similar package.])],
4105 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4106 [*], [LIBS_TERMCAP=])
4108 ## Use termcap instead of terminfo?
4109 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4111 ## FIXME? In the cases below where we unconditionally set
4112 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4113 ## if that was found above to have tputs.
4114 ## Should we use the gnu* logic everywhere?
4116 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4117 ## The ncurses library has been moved out of the System framework in
4118 ## Mac OS X 10.2. So if configure detects it, set the command-line
4119 ## option to use it.
4120 darwin) LIBS_TERMCAP="-lncurses" ;;
4122 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4125 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4126 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4127 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4128 [[#if __FreeBSD_version < 400000
4131 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4133 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4135 if test $emacs_cv_freebsd_terminfo = yes; then
4136 LIBS_TERMCAP="-lncurses"
4139 LIBS_TERMCAP="-ltermcap"
4149 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4151 LIBS_TERMCAP="-ltermcap"
4155 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4157 ## hpux: Make sure we get select from libc rather than from libcurses
4158 ## because libcurses on HPUX 10.10 has a broken version of select.
4159 ## We used to use -lc -lcurses, but this may be cleaner.
4160 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4161 # set that way, now it uses the default). Isn't this a contradiction?
4162 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4166 TERMCAP_OBJ=tparam.o
4167 if test $TERMINFO = yes; then
4168 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4169 TERMCAP_OBJ=terminfo.o
4171 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4172 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4174 AC_SUBST(LIBS_TERMCAP)
4175 AC_SUBST(TERMCAP_OBJ)
4177 # GNU/Linux-specific timer functions.
4178 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4180 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4182 [[timerfd_create (CLOCK_REALTIME,
4183 TFD_CLOEXEC | TFD_NONBLOCK);
4184 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4185 [emacs_cv_have_timerfd=yes],
4186 [emacs_cv_have_timerfd=no])])
4187 if test "$emacs_cv_have_timerfd" = yes; then
4188 AC_DEFINE([HAVE_TIMERFD], 1,
4189 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4192 # Alternate stack for signal handlers.
4193 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4194 [emacs_cv_alternate_stack],
4196 [AC_LANG_PROGRAM([[#include <signal.h>
4199 struct sigaction sa;
4200 ss.ss_sp = malloc (SIGSTKSZ);
4201 ss.ss_size = SIGSTKSZ;
4202 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4203 sigaltstack (&ss, 0);
4204 sigaction (SIGSEGV, &sa, 0);]])],
4205 [emacs_cv_alternate_stack=yes],
4206 [emacs_cv_alternate_stack=no])])
4208 # Do we need the Hesiod library to provide the support routines?
4209 dnl FIXME? Should we be skipping this on Darwin too?
4212 if test "$with_hesiod" != no ; then
4213 # Don't set $LIBS here -- see comments above. FIXME which comments?
4215 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4216 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4217 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4218 if test "$resolv" = yes ; then
4224 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4225 hesiod=yes, :, $RESOLVLIB)])
4227 if test x"$hesiod" = xyes; then
4229 LIBRESOLV=$RESOLVLIB
4235 # These tell us which Kerberos-related libraries to use.
4242 if test "${with_kerberos}" != no; then
4244 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4245 if test $have_com_err = yes; then
4246 COM_ERRLIB=-lcom_err
4247 LIBS="$COM_ERRLIB $LIBS"
4249 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4250 if test $have_crypto = yes; then
4252 LIBS="$CRYPTOLIB $LIBS"
4254 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4255 if test $have_k5crypto = yes; then
4256 CRYPTOLIB=-lk5crypto
4257 LIBS="$CRYPTOLIB $LIBS"
4259 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4260 if test $have_krb5=yes; then
4262 LIBS="$KRB5LIB $LIBS"
4264 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4265 if test "${with_kerberos5}" = no; then
4266 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4267 if test $have_des425 = yes; then
4269 LIBS="$DESLIB $LIBS"
4271 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4272 if test $have_des = yes; then
4274 LIBS="$DESLIB $LIBS"
4277 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4278 if test $have_krb4 = yes; then
4280 LIBS="$KRB4LIB $LIBS"
4282 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4283 if test $have_krb = yes; then
4285 LIBS="$KRB4LIB $LIBS"
4290 if test "${with_kerberos5}" != no; then
4291 AC_CHECK_HEADERS(krb5.h,
4292 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4293 [#include <krb5.h>])])
4295 AC_CHECK_HEADERS(krb.h,,
4296 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4297 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4299 AC_CHECK_HEADERS(com_err.h)
4303 AC_SUBST(COM_ERRLIB)
4309 AC_ARG_WITH([libgmp],
4310 [AS_HELP_STRING([--without-libgmp],
4311 [don't use the GNU Multiple Precision (GMP) library;
4312 this is the default on systems lacking libgmp.])])
4314 GMP_OBJ=mini-gmp-emacs.o
4316 case $with_libgmp in
4318 yes) HAVE_GMP=yes GMP_LIB=-lgmp;;
4319 *) AC_CHECK_HEADERS([gmp.h],
4321 AC_SEARCH_LIBS([__gmpz_roinit_n], [gmp])
4323 case $ac_cv_search___gmpz_roinit_n in
4324 'none needed') HAVE_GMP=yes;;
4325 -*) HAVE_GMP=yes GMP_LIB=$ac_cv_search___gmpz_roinit_n;;
4328 if test "$HAVE_GMP" = yes; then
4330 AC_DEFINE([HAVE_GMP], 1, [Define to 1 if you have recent-enough GMP.])
4335 AC_CHECK_HEADERS(valgrind/valgrind.h)
4337 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4339 AC_CHECK_FUNCS_ONCE([sbrk])
4342 AC_CHECK_FUNC(socket, , ok_so_far=no)
4343 if test $ok_so_far = yes; then
4344 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4346 if test $ok_so_far = yes; then
4347 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4349 if test $ok_so_far = yes; then
4350 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4351 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4352 [Define to 1 if you have inet sockets.])
4357 AC_CHECK_FUNCS(snprintf)
4359 dnl Check for glib. This differs from other library checks in that
4360 dnl Emacs need not link to glib unless some other library is already
4361 dnl linking to glib. Although glib provides no facilities that Emacs
4362 dnl needs for its own purposes, when glib is present Emacs needs to
4363 dnl use primitives like g_main_context_query to avoid clashing with
4364 dnl glib at a low level.
4366 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4368 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4369 [OLDCFLAGS="$CFLAGS"
4371 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4372 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4373 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4374 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4375 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4378 [[g_print ("Hello world");]])],
4379 [emacs_cv_links_glib=yes],
4380 [emacs_cv_links_glib=no])
4383 if test "${emacs_cv_links_glib}" = "yes"; then
4384 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4385 if test "$HAVE_NS" = no;then
4391 dnl Adapted from Haible's version.
4392 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4393 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4394 [[char* cs = nl_langinfo(CODESET);]])],
4395 emacs_cv_langinfo_codeset=yes,
4396 emacs_cv_langinfo_codeset=no)
4398 if test $emacs_cv_langinfo_codeset = yes; then
4399 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4400 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4405 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4406 dnl how the tty code is related to POSIX and/or other versions of termios.
4407 dnl The following looks like a useful start.
4409 dnl AC_SYS_POSIX_TERMIOS
4410 dnl if test $ac_cv_sys_posix_termios = yes; then
4411 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4412 dnl and macros for terminal control.])
4413 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4416 dnl Turned on June 1996 supposing nobody will mind it.
4417 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4418 if test "${opsys}" != "mingw32"; then
4419 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4420 in the full name stands for the login id.])
4423 dnl Everybody supports this, except MS.
4424 dnl Seems like the kind of thing we should be testing for, though.
4425 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4426 if test "${opsys}" != "mingw32"; then
4427 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4430 dnl Everybody supports this, except MS-DOS.
4431 dnl Seems like the kind of thing we should be testing for, though.
4432 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4433 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4434 4.2-compatible sockets.])
4436 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4438 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4439 a null file, or a data sink.])
4440 if test "${opsys}" = "mingw32"; then
4441 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4443 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4446 if test "${opsys}" = "mingw32"; then
4451 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4452 dnl This is for MinGW, and is used in test/Makefile.in.
4453 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4454 dnl decides that a command-line argument to be passed to a MinGW program
4455 dnl is a PATH-style list of directories. But that heuristics plays it
4456 dnl safe, and only does the replacement when it is _absolutely_ sure it
4457 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4458 dnl which breaks in-tree builds. So we do this manually instead.
4459 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4460 dnl be computed as ':' in MSYS Bash.
4463 dnl Everybody supports this, except MS-DOS.
4464 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4466 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4469 AC_DEFINE(DIRECTORY_SEP, ['/'],
4470 [Character that separates directories in a file name.])
4472 if test "${opsys}" = "mingw32"; then
4473 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4474 [Returns true if character is a device separator.])
4476 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4477 [Returns true if character is a directory separator.])
4479 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4480 [Returns true if character is any form of separator.])
4482 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4483 [Returns true if character is a device separator.])
4485 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4486 [Returns true if character is a directory separator.])
4488 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4489 [Returns true if character is any form of separator.])
4492 if test "$USE_X_TOOLKIT" != "none"; then
4496 dnl Assar Westerlund <assar@sics.se> says this is necessary
4497 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4501 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4503 dnl See libXmu.a check above.
4504 if test x$HAVE_X11XTR6 = xyes; then
4505 LIBS="-lXt -lSM -lICE $LIBXMU"
4507 OTHERLIBS="-lXt -$LIBXMU"
4510 [#include <X11/Intrinsic.h>
4511 #include <X11/Xmu/Editres.h>],
4512 [_XEditResCheckMessages (0, 0, 0, 0);],
4513 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4514 [Define to 1 if we should use XEditRes.])])
4521 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4522 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4523 dnl need the constant to dimension an array. So wire in the appropriate
4525 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4529 emacs_broken_SIGIO=no
4532 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4533 hpux* | nacl | openbsd | sol2* | unixware )
4534 emacs_broken_SIGIO=yes
4538 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4539 dnl the way this system works, libc functions that return malloced
4540 dnl memory use the libc malloc implementation. Calling xfree or
4541 dnl xrealloc on the results of such functions results in a crash.
4543 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4544 dnl but that does not currently work on this system.
4546 dnl It is possible to completely override the malloc implementation on
4547 dnl AIX, but that involves putting the malloc functions in a shared
4548 dnl library and setting the MALLOCTYPE environment variable to point to
4549 dnl that shared library.
4551 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4552 dnl to avoid a crash just use the Emacs implementation for that function.
4554 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4555 dnl of this file, so that we do not check for get_current_dir_name
4556 dnl on AIX. But that might be fragile if something else ends
4557 dnl up testing for get_current_dir_name as a dependency.
4558 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4559 get_current_dir_name should not be used.])
4563 dnl Circumvent a bug in FreeBSD. In the following sequence of
4564 dnl writes/reads on a PTY, read(2) returns bogus data:
4566 dnl write(2) 1022 bytes
4567 dnl write(2) 954 bytes, get EAGAIN
4568 dnl read(2) 1024 bytes in process_read_output
4569 dnl read(2) 11 bytes in process_read_output
4571 dnl That is, read(2) returns more bytes than have ever been written
4572 dnl successfully. The 1033 bytes read are the 1022 bytes written
4573 dnl successfully after processing (for example with CRs added if the
4574 dnl terminal is set up that way which it is here). The same bytes will
4575 dnl be seen again in a later read(2), without the CRs.
4576 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4577 work around an issue when reading from a PTY.])
4583 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4584 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4589 darwin | dragonfly | freebsd | netbsd | openbsd )
4590 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4591 close a pty to make it a controlling terminal (it is already a
4592 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4596 dnl FIXME Surely we can test for this rather than hard-code it.
4598 netbsd | openbsd) sound_device="/dev/audio" ;;
4599 *) sound_device="/dev/dsp" ;;
4603 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4604 [Name of the default sound device.])
4607 dnl Emacs can read input using SIGIO and buffering characters itself,
4608 dnl or using CBREAK mode and making C-g cause SIGINT.
4609 dnl The choice is controlled by the variable interrupt_input.
4611 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4613 dnl Emacs uses the presence of the USABLE_SIGIO macro
4614 dnl to indicate whether or not signal-driven I/O is possible. It uses
4615 dnl INTERRUPT_INPUT to decide whether to use it by default.
4617 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4618 dnl CBREAK mode has two disadvantages
4619 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4620 dnl I hear that in system V this problem does not exist.
4621 dnl 2) Control-G causes output to be discarded.
4622 dnl I do not know whether this can be fixed in system V.
4624 dnl Another method of doing input is planned but not implemented.
4625 dnl It would have Emacs fork off a separate process
4626 dnl to read the input and send it to the true Emacs process
4629 darwin | gnu-linux | gnu-kfreebsd )
4630 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4635 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4636 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4637 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4638 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4639 dnl taking float or double parameters.
4641 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4642 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4643 file defines 'NeedWidePrototypes' as 'NO'.])
4648 dnl Used in process.c, this must be a loop, even if it only runs once.
4649 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4650 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4651 dnl trying suffixes 0-16.
4652 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4653 first PTY, if PTYs are supported.])
4654 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4655 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4656 end of a PTY, if non-standard.])
4657 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4658 end of a PTY, if non-standard.])
4662 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4663 dnl You allocate a pty by opening /dev/ptc to get the master side.
4664 dnl To get the name of the slave side, you just ttyname() the master side.
4665 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4666 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4670 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4671 dnl multi-line AC_DEFINEs are hard. :(
4672 AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4673 AC_DEFINE(PTY_NAME_SPRINTF, [])
4674 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4677 gnu | openbsd | qnxnto )
4678 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4681 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4683 if test "x$ac_cv_func_grantpt" = xyes; then
4684 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4685 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4686 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4687 dnl to prevent sigchld_handler from intercepting the child's death.
4688 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4689 dnl if HAVE_POSIX_OPENPT
4690 if test "x$ac_cv_func_posix_openpt" = xyes; then
4691 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4692 AC_DEFINE(PTY_NAME_SPRINTF, [])
4694 elif test "x$ac_cv_func_getpt" = xyes; then
4695 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4696 AC_DEFINE(PTY_NAME_SPRINTF, [])
4698 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4701 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4706 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4707 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4708 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4712 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4713 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4714 dnl from intercepting that death. If any child but grantpt's should die
4715 dnl within, it should be caught after sigrelse(2).
4716 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4717 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4721 dnl Comments are as per sol2*.
4722 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4723 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4730 dnl This change means that we don't loop through allocate_pty too
4731 dnl many times in the (rare) event of a failure.
4732 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4733 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4734 dnl Push various streams modules onto a PTY channel. Used in process.c.
4735 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4740 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4741 "typing" a signal character on the pty.])
4744 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4745 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4746 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4749 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4750 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4751 gnu-linux | gnu-kfreebsd )
4753 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4754 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4755 #include <linux/version.h>
4756 #if LINUX_VERSION_CODE < 0x20400
4757 # error "Linux version too old"
4759 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4761 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4766 AH_TEMPLATE(TAB3, [Undocumented.])
4769 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4771 gnu | dragonfly | freebsd | netbsd | openbsd )
4772 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4773 AC_DEFINE(TAB3, OXTABS)
4776 gnu-linux | gnu-kfreebsd )
4777 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4781 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4782 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4783 [Mark a secondary stack, like the register stack on the ia64.]), [])
4787 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4788 run_time_remap; for HPUX.])
4793 dnl This won't be used automatically yet. We also need to know, at least,
4794 dnl that the stack is continuous.
4795 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4796 registers relevant for conservative garbage collection in the jmp_buf.])
4800 dnl Not all the architectures are tested, but there are Debian packages
4801 dnl for SCM and/or Guile on them, so the technique must work. See also
4802 dnl comments in alloc.c concerning setjmp and gcc.
4803 dnl Fixme: it's probably safe to just use the GCC conditional below.
4804 gnu-linux | gnu-kfreebsd )
4805 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4806 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4807 || defined __alpha__ || defined __mips__ || defined __s390__ \
4808 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4809 || defined __ia64__ || defined __sh__
4812 # error "setjmp not known to work on this arch"
4814 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4819 if test x$GCC = xyes; then
4820 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4821 AC_DEFINE(GC_SETJMP_WORKS, 1)
4824 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4825 AC_DEFINE(GC_SETJMP_WORKS, 1)
4830 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4831 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4834 [[#include <setjmp.h>
4836 # define _longjmp longjmp
4841 _longjmp (j, 1);]])],
4842 [emacs_cv_func__setjmp=yes],
4843 [emacs_cv_func__setjmp=no])])
4844 if test $emacs_cv_func__setjmp = yes; then
4845 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4848 # We need to preserve signal mask to handle C stack overflows.
4849 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4852 [[#include <setjmp.h>
4855 if (! sigsetjmp (j, 1))
4856 siglongjmp (j, 1);]])],
4857 [emacs_cv_func_sigsetjmp=yes],
4858 [emacs_cv_func_sigsetjmp=no])])
4859 if test $emacs_cv_func_sigsetjmp = yes; then
4860 AC_DEFINE([HAVE_SIGSETJMP], 1,
4861 [Define to 1 if sigsetjmp and siglongjmp work.])
4864 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4865 yes,yes,* | *,*,mingw32)
4866 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4867 [Define to 1 if C stack overflow can be handled in some cases.]);;
4872 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4873 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4874 dnl and this is all we need.
4875 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4882 dnl Used in xfaces.c.
4883 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4884 some systems, where it requires time.h.])
4889 dnl Define symbols to identify the version of Unix this is.
4890 dnl Define all the symbols that apply correctly.
4891 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4892 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4893 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4894 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4899 dnl This symbol should be defined on AIX Version 3 ???????
4900 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4902 # error "_AIX not defined"
4904 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4908 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4912 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4913 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4914 dnl distinguish macOS from pure Darwin.
4915 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4918 gnu-linux | gnu-kfreebsd )
4920 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4925 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4929 AC_DEFINE(DOS_NT, [])
4930 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4931 if test "x$ac_enable_checking" != "x" ; then
4932 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4938 AC_DEFINE(USG5_4, [])
4939 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4944 AC_DEFINE(USG5_4, [])
4948 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4951 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4952 emacs_cv_usable_FIONREAD=no
4956 emacs_cv_usable_FIONREAD=yes
4961 [AC_LANG_PROGRAM([[#include <sys/types.h>
4962 #include <sys/ioctl.h>
4964 # include <sys/filio.h>
4967 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4968 [emacs_cv_usable_FIONREAD=yes],
4969 [emacs_cv_usable_FIONREAD=no])
4972 if test $emacs_cv_usable_FIONREAD = yes; then
4973 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4975 if test $emacs_broken_SIGIO = no; then
4976 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4978 [AC_LANG_PROGRAM([[#include <fcntl.h>
4981 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4982 [emacs_cv_usable_SIGIO=yes],
4983 [emacs_cv_usable_SIGIO=no])],
4984 [emacs_cv_usable_SIGIO=yes],
4985 [emacs_cv_usable_SIGIO=no])
4986 if test $emacs_cv_usable_SIGIO = yes; then
4987 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4994 dnl It works to open the pty's tty in the parent (Emacs), then
4995 dnl close and reopen it in the child.
4996 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4997 works to open a pty's tty in the parent process, then close and
4998 reopen it in the child.])
5002 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
5007 # Set up the CFLAGS for real compilation, so we can substitute it.
5008 CFLAGS="$REAL_CFLAGS"
5009 CPPFLAGS="$REAL_CPPFLAGS"
5012 ## Hack to detect a buggy GCC version.
5013 if test "$GCC" = yes && \
5014 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5016 *-fno-optimize-sibling-calls*) ;;
5018 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5022 version=$PACKAGE_VERSION
5024 copyright="Copyright (C) 2018 Free Software Foundation, Inc."
5025 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5026 [Short copyright string for this version of Emacs.])
5029 ### Specify what sort of things we'll be editing into Makefile and config.h.
5030 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5032 AC_SUBST(configuration)
5037 AC_SUBST(exec_prefix)
5040 AC_SUBST(sharedstatedir)
5041 AC_SUBST(libexecdir)
5045 AC_SUBST(standardlisppath)
5046 AC_SUBST(locallisppath)
5048 AC_SUBST(x_default_search_path)
5050 AC_SUBST(archlibdir)
5056 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5057 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5058 ## end of LIBX_BASE, but nothing ever set it.
5059 AC_SUBST(LD_SWITCH_X_SITE)
5060 AC_SUBST(C_SWITCH_X_SITE)
5061 AC_SUBST(GNUSTEP_CFLAGS)
5063 ## Used in lwlib/Makefile.in.
5064 AC_SUBST(X_TOOLKIT_TYPE)
5066 AC_SUBST(ns_appbindir)
5067 AC_SUBST(ns_appresdir)
5069 AC_SUBST(GNU_OBJC_CFLAGS)
5070 AC_SUBST(OTHER_FILES)
5072 if test -n "${term_header}"; then
5073 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5074 [Define to the header for the built-in window system.])
5077 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5078 [Define to the canonical Emacs configuration name.])
5079 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5080 [Define to the options passed to configure.])
5085 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5086 AC_DEFINE(HAVE_X_WINDOWS, 1,
5087 [Define to 1 if you want to use the X window system.])
5089 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5091 if test "$HAVE_CAIRO" = "yes"; then
5092 FONT_OBJ="ftfont.o ftcrfont.o"
5093 elif test "$HAVE_XFT" = "yes"; then
5094 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5095 elif test "$HAVE_FREETYPE" = "yes"; then
5096 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5106 if test "${USE_X_TOOLKIT}" != "none" ; then
5108 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5109 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5110 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5111 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5112 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5116 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5117 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5121 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5122 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5123 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5127 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5128 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5131 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5134 AC_SUBST(WIDGET_OBJ)
5137 case "$USE_X_TOOLKIT" in
5138 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5139 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5140 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5142 if test "$HAVE_XWIDGETS" = "yes"; then
5143 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5145 AC_SUBST(TOOLKIT_LIBW)
5147 if test "${opsys}" != "mingw32"; then
5148 if test "$USE_X_TOOLKIT" = "none"; then
5149 LIBXT_OTHER="\$(LIBXSM)"
5151 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5154 AC_SUBST(LIBXT_OTHER)
5156 if test "${HAVE_X11}" = "yes" ; then
5157 AC_DEFINE(HAVE_X11, 1,
5158 [Define to 1 if you want to use version 11 of X windows.])
5159 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5163 AC_SUBST(LIBX_OTHER)
5166 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5168 elif test "$USE_X_TOOLKIT" = none; then
5170 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5171 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5173 LIBXMENU='$(lwlibdir)/liblw.a'
5174 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5178 if test "${GNU_MALLOC}" = "yes" ; then
5179 AC_DEFINE(GNU_MALLOC, 1,
5180 [Define to 1 if you want to use the GNU memory allocator.])
5184 if test "${REL_ALLOC}" = "yes" ; then
5185 AC_DEFINE(REL_ALLOC, 1,
5186 [Define REL_ALLOC if you want to use the relocating allocator for
5189 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5191 AC_SUBST(RALLOC_OBJ)
5193 if test "$opsys" = "cygwin"; then
5194 CYGWIN_OBJ="cygw32.o"
5195 ## Cygwin differs because of its unexec().
5197 POST_ALLOC_OBJ=lastfile.o
5198 elif test "$opsys" = "mingw32"; then
5201 POST_ALLOC_OBJ=lastfile.o
5204 PRE_ALLOC_OBJ=lastfile.o
5207 AC_SUBST(CYGWIN_OBJ)
5208 AC_SUBST(PRE_ALLOC_OBJ)
5209 AC_SUBST(POST_ALLOC_OBJ)
5211 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5212 dnl verbatim defined above. The tricky name is apropos, as this hack
5213 dnl makes Fortify go sour!
5214 AH_VERBATIM([FORTIFY_SOUR],
5215 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5216 The workaround disables some useful run-time checking, so it
5217 should be conditional to the platforms with the performance bug.
5218 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5219 #if defined __APPLE__ && defined __GNUC__
5220 # ifndef _DONT_USE_CTYPE_INLINE_
5221 # define _DONT_USE_CTYPE_INLINE_
5223 # ifndef _FORTIFY_SOURCE
5224 # define _FORTIFY_SOURCE 0
5229 # If user asks to omit features, disable optional features that gnulib
5230 # might otherwise enable.
5231 if test "$with_features" = no && test "$enable_acl" != yes; then
5235 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5236 # it temporarily reverts them to their pre-pkg-config values,
5237 # because gnulib needs to work with both src (which uses the
5238 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5239 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5240 # and it therefore needs to run in an environment where LIBS does not
5241 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5242 # for some package unrelated to lib-src.
5245 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5246 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5247 gl_ASSERT_NO_GNULIB_POSIXCHECK
5248 gl_ASSERT_NO_GNULIB_TESTS
5253 if test "${opsys}" = "mingw32"; then
5254 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5255 # Remove unneeded switches from the value of CC that goes to Makefiles
5256 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5260 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5262 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5265 ## The -headerpad option tells ld (see man page) to leave room at the
5266 ## end of the header for adding load commands. Needed for dumping.
5267 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5268 ## architecture (where they are 78 bytes each). The actual number of
5269 ## load commands added is not consistent but normally ranges from
5270 ## about 14 to about 34. Setting it high gets us plenty of slop and
5271 ## only costs about 1.5K of wasted binary space.
5272 headerpad_extra=1000
5273 if test "$HAVE_NS" = "yes"; then
5274 libs_nsgui="-framework AppKit"
5275 if test "$NS_IMPL_COCOA" = "yes"; then
5276 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
5281 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5283 ## This is here because src/Makefile.in did some extra fiddling around
5284 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5285 ## LD_SWITCH_SYSTEM_TEMACS instead,
5286 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5287 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5290 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5291 ## find X at run-time.
5292 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5293 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5294 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5295 ## had different values in configure (in ac_link) and src/Makefile.in.
5296 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5297 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5300 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5301 case "$canonical" in
5302 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5303 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5307 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5310 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5311 # Ubuntu, and other systems with "hardened" GCC configurations for
5312 # some reason (Bug#18784). We don't know why this works, but not
5313 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5314 # when trying the option, otherwise clang keeps warning that it does
5315 # not understand it, and pre-4.6 GCC has a similar problem
5316 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5317 # spelling used by GCC 6.1.0 and later (Bug#24682).
5319 [for $CC option to disable position independent executables],
5320 [emacs_cv_prog_cc_no_pie],
5321 [if test "$CANNOT_DUMP" = yes; then
5322 emacs_cv_prog_cc_no_pie='not needed'
5324 emacs_save_c_werror_flag=$ac_c_werror_flag
5325 emacs_save_LDFLAGS=$LDFLAGS
5326 ac_c_werror_flag=yes
5327 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5328 test $emacs_cv_prog_cc_no_pie = no && break
5329 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5330 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5332 ac_c_werror_flag=$emacs_save_c_werror_flag
5333 LDFLAGS=$emacs_save_LDFLAGS
5335 case $emacs_cv_prog_cc_no_pie in
5337 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5341 if test x$ac_enable_profiling != x ; then
5343 *freebsd | gnu-linux) ;;
5344 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5348 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5350 ## Common for all window systems
5351 if test "$window_system" != "none"; then
5352 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5353 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5354 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5357 AC_SUBST(WINDOW_SYSTEM_OBJ)
5359 AH_TOP([/* GNU Emacs site configuration template file.
5361 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2018
5362 Free Software Foundation, Inc.
5364 This file is part of GNU Emacs.
5366 GNU Emacs is free software: you can redistribute it and/or modify
5367 it under the terms of the GNU General Public License as published by
5368 the Free Software Foundation, either version 3 of the License, or (at
5369 your option) any later version.
5371 GNU Emacs is distributed in the hope that it will be useful,
5372 but WITHOUT ANY WARRANTY; without even the implied warranty of
5373 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5374 GNU General Public License for more details.
5376 You should have received a copy of the GNU General Public License
5377 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5380 /* No code in Emacs #includes config.h twice, but some bits of code
5381 intended to work with other packages as well (like gmalloc.c)
5382 think they can include it as many times as they like. */
5383 #ifndef EMACS_CONFIG_H
5384 #define EMACS_CONFIG_H
5387 AH_BOTTOM([#include <conf_post.h>
5389 #endif /* EMACS_CONFIG_H */
5398 #### Report on what we decided to do.
5399 #### Report GTK as a toolkit, even if it doesn't use Xt.
5400 #### It makes printing result more understandable as using GTK sets
5401 #### toolkit_scroll_bars to yes by default.
5402 if test "${HAVE_GTK}" = "yes"; then
5403 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5406 if test $USE_ACL -ne 0; then
5407 ACL_SUMMARY="yes $LIB_ACL"
5412 emacs_standard_dirs='Standard dirs'
5414 Configured for '${canonical}'.
5416 Where should the build process find the source code? ${srcdir}
5417 What compiler should emacs be built with? ${CC} ${CFLAGS}
5418 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5419 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5420 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5421 What window system should Emacs use? ${window_system}
5422 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5423 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5424 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5427 emacs_config_features=
5428 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5429 GCONF GSETTINGS GLIB NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5430 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 XDBE XIM \
5431 NS MODULES THREADS XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2 GMP; do
5434 CANNOT_DUMP) eval val=\${$opt} ;;
5435 GLIB) val=${emacs_cv_links_glib} ;;
5436 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5437 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5438 THREADS) val=${threads_enabled} ;;
5439 *) eval val=\${HAVE_$opt} ;;
5442 xno|xnone|x) continue ;;
5447 GTK*|LUCID|MOTIF) opt=$val ;;
5452 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5455 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5456 [Summary of some of the main features enabled by configure.])
5458 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5459 Does Emacs use -lXpm? ${HAVE_XPM}
5460 Does Emacs use -ljpeg? ${HAVE_JPEG}
5461 Does Emacs use -ltiff? ${HAVE_TIFF}
5462 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5463 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5464 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5465 Does Emacs use cairo? ${HAVE_CAIRO}
5466 Does Emacs use -llcms2? ${HAVE_LCMS2}
5467 Does Emacs use imagemagick? ${HAVE_IMAGEMAGICK}
5468 Does Emacs support sound? ${HAVE_SOUND}
5469 Does Emacs use -lgpm? ${HAVE_GPM}
5470 Does Emacs use -ldbus? ${HAVE_DBUS}
5471 Does Emacs use -lgconf? ${HAVE_GCONF}
5472 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5473 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5474 Does Emacs use access control lists? ${ACL_SUMMARY}
5475 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5476 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5477 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5478 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5479 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5480 Does Emacs use -lotf? ${HAVE_LIBOTF}
5481 Does Emacs use -lxft? ${HAVE_XFT}
5482 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5483 Does Emacs use -ljansson? ${HAVE_JSON}
5484 Does Emacs use -lgmp? ${HAVE_GMP}
5485 Does Emacs directly use zlib? ${HAVE_ZLIB}
5486 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5487 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5488 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5489 Does Emacs have threading support in lisp? ${threads_enabled}
5492 if test -n "${EMACSDATA}"; then
5493 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5495 if test -n "${EMACSDOC}"; then
5496 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5501 if test "$HAVE_NS" = "yes"; then
5503 AS_ECHO(["Run '${MAKE-make}' to build Emacs, then run 'src/emacs' to test it.
5504 Run '${MAKE-make} install' in order to build an application bundle.
5505 The application will go to nextstep/Emacs.app and can be run or moved
5507 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5508 echo "The application will be fully self-contained."
5510 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5511 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5512 to run if these resources are not installed."])
5517 case $opsys,$emacs_uname_r in
5519 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5524 # Remove any trailing slashes in these variables.
5526 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5528 case $exec_prefix in
5529 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5532 if test "$HAVE_NS" = "yes"; then
5533 if test "$NS_IMPL_GNUSTEP" = yes; then
5534 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5535 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5536 ns_check_file=Resources/Info-gnustep.plist
5538 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5539 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5540 ns_check_file=Contents/Info.plist
5542 AC_SUBST(ns_check_file)
5545 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5547 dnl config.status treats $srcdir specially, so I think this is ok...
5548 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5550 m4_define([subdir_makefiles],
5551 [lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile])
5552 SUBDIR_MAKEFILES="subdir_makefiles"
5553 AC_CONFIG_FILES(subdir_makefiles)
5555 dnl test/ is not present in release tarfiles.
5556 opt_makefile=test/Makefile
5558 if test -f "$srcdir/$opt_makefile.in"; then
5559 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5560 dnl Again, it's best not to use a variable. Though you can add
5561 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5562 AC_CONFIG_FILES([test/Makefile])
5566 dnl The admin/ directory used to be excluded from tarfiles.
5567 if test -d $srcdir/admin; then
5568 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5569 AC_CONFIG_FILES([admin/charsets/Makefile])
5570 AC_CONFIG_FILES([admin/unidata/Makefile])
5571 AC_CONFIG_FILES([admin/grammars/Makefile])
5575 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5577 AC_SUBST(SUBDIR_MAKEFILES_IN)
5579 dnl You might wonder (I did) why epaths.h is generated by running make,
5580 dnl rather than just letting configure generate it from epaths.in.
5581 dnl One reason is that the various paths are not fully expanded (see above);
5582 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5583 dnl Secondly, the GNU Coding standards require that one should be able
5584 dnl to run 'make prefix=/some/where/else' and override the values set
5585 dnl by configure. This also explains the 'move-if-change' test and
5586 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5587 AC_CONFIG_COMMANDS([src/epaths.h], [
5588 if test "${opsys}" = "mingw32"; then
5589 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5591 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5592 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5593 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5595 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5596 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5598 AC_CONFIG_COMMANDS([src/.gdbinit], [
5599 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5600 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5604 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5605 dnl See comments for etc-refcards-emacsver.tex.
5606 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5607 dnl it is not quite the same. But we are generating in $srcdir.
5608 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5609 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5610 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5613 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5614 dnl then a directory etc/refcards is created in the build directory,
5615 dnl which is probably harmless, but confusing (in out-of-tree builds).
5616 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5617 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5618 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5619 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5620 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5623 if test $AUTO_DEPEND = yes; then
5624 for dir in $AUTODEPEND_PARENTS; do
5625 AS_MKDIR_P([$dir/deps])
5631 if test ! "$with_mailutils"; then
5632 if test "$with_pop" = yes; then
5633 AC_MSG_WARN([This configuration installs a 'movemail' program
5634 that retrieves POP3 email via only insecure channels.
5635 To omit insecure POP3, you can use '$0 --without-pop'.])
5636 elif test "$with_pop" = no-by-default; then
5637 AC_MSG_WARN([This configuration installs a 'movemail' program
5638 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5639 installed a 'movemail' program that retrieved POP3 email via only
5640 insecure channels, a practice that is no longer recommended but that
5641 you can continue to support by using '$0 --with-pop'.])
5646 # Don't suggest GNU Mailutils, as it hasn't been ported.
5649 emacs_fix_movemail="use '$0 --with-mailutils'"
5650 case `(movemail --version) 2>/dev/null` in
5652 *) emacs_fix_movemail="install GNU Mailutils
5653 <https://mailutils.org> and $emacs_fix_movemail";;
5655 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5659 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])